bruce roberts goodson yacht design

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boat plans 

/ 19,558 Kg and carries 835 Gal / 3,160 Lit. of diesel fuel and 250 Gal / 946 Lit. of water.

By the end of the voyage Salvation 11 had called at 528 ports, visited 51 countries (including 34 states of the USA) and motored just over 302,500 nautical miles in 7,760 hours at an average speed of 6.5 knots / 12.02 kph.

The Bruce Roberts Steel or Aluminum kits contain: All plate parts belonging to the hull, deck and superstructure that are accurately cut to size are included. The parts are marked with the appropriate part number and engraved matching marking lines to assist in the assembly and location of the part in its position. All framing, stringers, engine beds, 'T' sole bearers, deck beams, deck stringers and all exterior plating, plus 3 steel bulkheads and stiffeners is included. Windows and doorways are cut out as required. In the case of radius-chine hulls, the radius plates a rolled to the perfect shape and NO fitting is required. Complete assembly and engineering plans supplied. A building jig is supplied with the kit.   Delivery is often included in the quoted price. Cutting method is Plasma / Oxygen, ensuring highest accuracy and smooth edges. Plate parts are cut from either Marine Grade ALUMINUM or Grade ?A? Ship-building quality STEEL that has been coated with factory applied Sigma weld MC welding primer.  We use and recommend steel plate that has the official designation ISO standard 10474 or EN 10204 with 3.1.B certificate. All pre-primed profiles belonging to the hull, deck and superstructure are supplied in sufficient quantity and are in factory lengths of 6 M / 20 ft, coated with factory applied Sigma weld MC welding primer. Openings for windows and doors can be cut or only marked as per customer's preference. Bulkheads are supplied complete with stiffeners and are in accordance with classification rules and safety regulations. Cold forming of plate parts is included where this requirement forms part of the design. Basic engine foundations are integrated into the construction. A Setting up jig with the correct shape of the hull plates that can be used as building jig for the entire hull after reinforcement plus there is a extensive building manual including detailed drawings, parts list and welding instructions. In these days where both the local authorities and the better informed builders themselves, it is important that the construction calculations are in accordance with prevailing classification society so this factor is part of the preparation of any Bruce Roberts kit. ASSEMBLY DRAWINGS Each kit or set of cutting files comes complete with about 15 sheets of detailed assembly drawings with written instructions and check measurements for assembling each part of the kit. The drawings cover assembling the frames, setting up the building jig (supplied) on to I beams or similar base. These extensive drawings take you right through the welding up process from start to finish.   ENGINEERING DRAWINGS Also are included several sheets of detailed engineering drawings that cover the installation of the main engine(s), ?take home engine?, generating set, exhaust systems, fuel systems, fuel and water thanks etc. METAL KITS ASSEMBLY INSTRUCTIONS: 1: INTRODUCTION. Throughout these instructions we will use the word metal which may apply to steel, aluminium or copper-nickel. There will be variations between the handling of the various materials and these will be drawn to your attention as necessary. YOU WILL NEED TO READ and absorb all these instructions BEFORE you start the assembly of your kit. These instructions are intended to introduce you to building from a kit but are NOT intended to replace good metal boat building practice. If you are not already a competent welder then please seek assistance.

Few of you will understand (or want to know!) the huge amount of work that is required to turn any boat plan in to a cut-to-size boat kit. Every part has to exactly match that of its neighbor, the slots need to be exactly in the correct locations and everything must fit perfectly together to enable you to complete the assembly of the hull, deck, and superstructure with the minimum of problems.

Despite our best endeavors and attention to detail in developing the kit and the cutting of the metal parts, some parts may not fit or appear to have the wrong shape. Before rushing to cut and or shape parts to fit the hull, carefully check the drawings and measurements from the surrounding parts to ensure that nothing else is wrong.

The first thing to realize is that the kit differs in many ways from the methods you would use to build a metal boat from scratch. The kit is far superior to anything you could achieve by starting with the plans and delivery of raw steel plate and the various profile bars that are needed to build your metal boat.

Most metal boats built from scratch are built upside-down…most boats built from cut-to-size metal kits are built UPRIGHT . Not only is this a more appropriate way to assemble the kit but also it saves cost and inconvenience of having to turn the hull.

To make sure that you take notice of one very important piece of advice, we will state it here as well as at the appropriate time:

YOU MUST TACK WELD THE COMPLETE HULL DECK AND SUPERSTRUCTURE TOGETHER BEFORE YOU RUN ANY FINAL WELDS.

Failure to observe this advice will almost certainly ensure you will end up with an unfair boat requiring a considerable amount of filler. In any case do NOT OVER-WELD or try and run long welds at one time.

2: RECEIVING YOUR KIT. Depending on your location or delivery arrangements your kit may arrive on a flatbed truck or in a container. You should be aware of these arrangements before the actual date of delivery so you can make the necessary preparations to receive your kit.

The kits are normally packed on pallet(s) and can be lifted off the transport using a small crane, front-end loader, or similar equipment. You may find it more convenient to "drag" your kit from the truck or container using a pair or planks as a ramp. Once you have unloaded your kit you must make provision to keep it covered until assembly is underway. Make sure that the metal parts are not in direct contact with cement-based floors like concrete, as this will affect the Sigmaweld primer.

You should go trough the kit and identify each part or group of parts so you can store these in the order that they will be required. Due to the requirement of packaging for transport it is impossible for the kit manufacturer to stack everything in the order you will be using the various parts…you must take care of this. Later in this text we will suggest the order of assembling your kit so you will be aware of which parts you will need at each stage. If you do not find a particular part at this stage …DO NOT PANIC…there will be so many pieces that it will be easy for you to overlook one or two at this stage. If after several checks you find one or more parts missing then do contact the supplier of your kit so they may put the matter right.

3: ASSEMBLY SEQUENCE. FOR MOST HULLS: The first item you will need is the setting up jig. The metal "castles" that come as part of your kit will support the transverse profile jigs. The setting up jig is intended to get the assembly of your hull started and is NOT INTENDED TO SUPPORT THE BOAT during the entire building process. After you have the bottom plates tacked together you should consider adding extra support and bracing to the structure.

For most hulls, the general assembly sequence is:

Assemble the jig. Bottom plates into the jig; line up the markings for frames and tack weld together. Assemble web-frames in accordance with drawings. Position bottom longitudinal stiffeners on bottom plates (very small tack welds only). Position frame over longitudinal stiffeners onto bottom plates, starting with the middle frame, work your way aft ships and then from the middle to the bow. Tack-weld frames in position, observing the markings on the plates indicating the correct position of the frame. The direction of the arrow in the marking indicates the direction of the plate thickness. Always start tack welding at the bottom centerline working your way outward. Tack-weld bottom longitudinal stiffeners to web-frames Insert side longitudinal stiffeners into web-frames and continuously check the frame spacing. Position side-hull plates starting at transom and tack weld to web-frames only. Tack weld longitudinal stiffeners to side and aft-hull plates. For hulls with build-in spray-rails start at the bottom and work your way upwards. Position rear hull panel (transom) and tack-weld to bottom and side plates. Position longitudinal deck-stiffeners and tack-weld to web-frames. Position deck-plates starting aft and tack-weld to web-frames only. Tack-weld deck-longitudinal stiffeners to deck plates. Position superstructure walls and tack-weld to web-frames. Position and tack-weld roof-plates to deck.

This is the recommended sequence for most type hulls. Depending on the facilities of your workshop and building site, variations may be required or preferred. The better equipped your workshop is with overhead lifting equipment and equipment the easier and more smoothly will your job proceed. We do recommend that you read some of the literature available on metal boat building, which will answer many of those general metal boat building questions that are sure to need clarifying as the project proceeds, if only to get familiar with the terminology of parts and components of your kit. Contact your supplier for titles available in your area.

FOR HULLS WITH LONG KEELS INCLUDING SPRAY TYPES:

The Spray and similar hulls are unusual in that the keel structure should be assembled at the same time as the bottom plating. Take care that you do not "squeeze' in the tops of the keel, use the webs as spacers. After you have positioned the bottom plates, the keel sections and the transverse profile jigs in their correct location you may start to tack weld the bottom plates to the keel sides.

FOR SAILBOATS WITH FIN KEELS:

Sailboats with deep keels will have the keel installed after the hull is completed. The "canoe body" should be built from the bottom of the hull upwards in a similar manner used to assemble a powerboat hull. The webs will be arranged so you can later add the keel after raising the hull into the correct elevation.

The idea of this method is to allow you to work on the hull deck and superstructure while the boat is lower and thus more accessible. The exact method and order of assembly may depend on the availability of lifting equipment and your general work environment.

FOR POWERBOATS:

In most cases you can start by laying the bottom plates in the transverse profile jigs and with the aid of the "castles" so position the plates that you can start to tack the hull plating together along the centerline. You will next be able to install the bottom sections of the frames and webs in their correct location.

5- WHAT YOU NEED TO KNOW ABOUT WELDING  

Attempting to construct a metal boat kit leads us to believe that at least the basics of arc and or Co2 welding are known. If in doubt about your abilities to weld, improving your skills on some scrap pieces of metal would be advisable as there are no great secrets in general steel welding but practicing would set you of to a good start right at the beginning.

Welding aluminium or copper nickel should not be attempted without proper knowledge of the materials and welding sequences involved and should always be carried out in covered and clean surroundings.

The metal kits are constructed in such a manner that the strength of the hull & deck is created from the build up of the frames and stringers as interlocking sections, HEAVY AND CONTINUOUS WELDING OF FRAMES AND STRINGERS SHOULD BE AVOIDED AT ALL TIMES.

Especially important for all plate joints during the assembly of the hull is DO NOT APPLY CONTINUOUS WELDS. The plate joints should be ONLY TACK WELDED in three locations, one weld at the each of the ends of the join and one in the centre of the join. These tacks should be no more than 2 inches or 50mm long. If you weld the plates on the floor you will end up with a "hard-spot" in the hull plating.

All parts of your kit are cut to a precision of 2 mm and are designed to be welded together without any opening between the parts. Some plates will need to be beveled before tacking in place or you may prefer to make the bevels after you have tack welded the plates and just before running the final welds. In all cases good metal boat building practices will prevail.

After the hull & deck are COMPLETELY TACK-WELDED together, the process of finishing welding can take place. The secret of creating a fair hull & deck after tack welding is completed is to use a fairly high amperage and speed setting of your welding equipment. Welding with too low amperage and slow speed will create lots of heat on the spot and less penetration of weld material in the seam, causing strength problems and lots of grinding weld material away to obtain a smooth surface afterwards. This in turn would weaken the weld again.

Using common sense and practice should leave you to create a smooth and fair hull & deck structure with very little distortion. IF IN DOUBT ABOUT YOUR SKILLS, SEEK ADVICE.

Any metal construction company or competent welder can help you with the basics. Always observe personal protection and safety regulations.

6. ASSEMBLING YOUR KIT.

With the arrival of your metal kit, you received a packing list containing the names, numbers, and quantities of all the parts in the metal package.You also received one or more large-scale drawings showing all the parts as flat surfaces and more or less grouped together as they appear in the metal kit and a number of small drawings showing the assembly of the frames with the appropriate measurements.

Studying the large scale drawings will give you a first insight in the position of the various parts and it becomes apparent that the numbering is as much as possible a logical sequence of the way the parts assembly progresses.

Prior to using these drawings, we advise to make some copies of the drawings or parts there off or cover them with plastic as they could easily be destroyed during the construction and welding.

Using the packing list and the drawings you can now make a check to see if all the parts are present. For ease of recognition you will find that frames etc. are numbered with 4A, 4B, 4C etc. thus every time you find a number 4 and extension A or B etc., they belong to the frame no.4.

The cutting, collecting, and identification of parts during production is a manual process. This is why parts may be given incorrect numbers and even get lost, in spite of our thorough quality and quantity control procedure. Checking and verifying all parts against the packing list provided and keeping unidentified parts aside until the end enables you to identify the missing parts and incorrect markings on parts for clarification with the supplier.

Apart from the plate parts, your kit also includes a selection of profiles, supplied at factory lengths, as listed the Packing list. Each bar needs to be cut to the length required in its position in the construction as detailed on the Construction Plan provided in the set of drawings.

Now that you have collected and sorted all the parts, the frames can be tack-welded together by using the small drawings and the given measurements as reference.

Prior to welding, use an angle grinder and create a "V" of approx. 60° at the seam to be welded.

This means 30° angle at each plate edge. Doing this will give you better penetration of the welding material, adding strength to the hull. We use the word tack-welding again as it would be tempting to finish welding the seams fully.

Some models have flat or angled bars added on the inside edge of the frame plates for additional strength. Check the Construction Plan provided. These so called Girders are best fitted as soon as the frame parts are tacked together, before placing the frame in its position in the hull.

On larger boats it might be an advantage to only weld the bottom parts of the frames together and put the side frames up after the frames are in place on the bottom plates. Your own judgement is important here.

Having prepared all the frames in this manner it is now time to prepare the building jig.

With the metal kit you have received 2 or more jig parts as shown below.

These supplied parts are only initial shape supports and CANNOT BE USED AS FULL BUILDING FRAME WITHOUT SUBSTANTIAL STIFFENING AND CROSS BRACING .

The supplied jig parts could be placed on a concrete underground, leveled, and stiffened.

In case no solid underground is available, the use of a couple of heavy RSJ’s picked up from a

local scrap dealer could do the trick. The distance between the jigs is determined by the position of each frame (web) in the hull, whereby the jig number is the same as the frame number (f.e. Jig-part J5-2 is at frame 5).

In case the "jig" parts stay in place during the entire construction, it would be advisable to tack-weld a flat bar across the top of the plates to spread the point loading and avoid possible damage to the hull plating.

Now place the bottom plates on the prepared jigs or building frame and tack-weld together at a number of points.

We refer here to paragraph 2 in relation to sailboats like the Spray series where also the keel is placed under the bottom plates at this stage.

For those of you who are new to this type of boat building, having placed the bottom plates on the jigs, it seems they are never going to fit.

Start tack welding at the location roughly in the middle or somewhat aft of the middle after lining up the lines on the plates and position of the plates.

When you now go forward or backwards from the tack-welded position you can help the plates get in shape by having some helpers pull up the sides and using a trolley jack underneath the middle join of the plates until the seams touch. Now tack-weld at this point and go to the next position. At the bow you would probably need a hand block and tackle to pull the sides of the plates together as some tension will be experienced here.

DO NOT FORGET TO SECURE THE POSITIONS OF THE CLAMPS AGAINST SLIDING AWAY.

Having finished tack-welding the bottom plates together, start placing the longitudinal stiffeners at the markings on the bottom plates whilst lining-up the slots with the position of the frames (webs), as indicated by lines on the plates and use the large scale drawing(s) as reference. Only tack-weld these longitudinals to keep them in place for the time being. As frames will have to be slotted over these longitudinals, we recommend to tack-weld only to the bottom plate in the middle between frame positions, which allows you to align these when putting the frames in position.

Then start placing the frames (webs) which slot in the longitudinals. Position the middle frame first and tack-weld it to the bottom-plates in the centre, then pull up the bottom plates towards the frames until they fit snugly and tack-weld .

Depending on the shape of your hull, we recommend to work your way aft first, thereafter from the middle to the bow.

If you have put the frames together completely, use some temporary bracing on the upright sides of the frames, as they are likely to flop about a bit.

Now we place the stringers in the slots of the frames on the sides and slightly tack-weld at some spots to keep them in position.

We do emphasize again, ONLY TACK-WELDING.

At this stage you have already created a strong and solid base of the hull and the time has come to bring the side plates into position. This is best done by using a simple overhead gantry or the use of a forklift truck.

Pick up the side plate(s) by using a plate clamp on a chain connected to a block and tackle or forklift leg, make sure the plate is more or less in balance when it is hanging in the air and bring to its allocated position.

Use a helper to put a point of the seam in the right position and tack-weld .

Continue by moving the plate up or down a bit with the block and tackle until the entire side is in position and tack-welded. Place some tack-welds on the uprights of the frames as well.

The side plates nearer to and at the underside of the bow will show some tension and can be pulled in place by attaching a chain on the outside of the plates and pulling them into position.

To attach a chain and/or block and tackle to a plate, tack-weld a temporary eye or something similar to the plate. By only welding on one side of such plate(s), you can easily remove these again by bending this plate until the weld breaks.

Note: In the case of radius chine sailboats, the radius chine sections are not used at this stage; we will come back to those later. Next the transom plates, bathing platform where applicable, stern plates and all other plates belonging to the hull are offered up in position and tack-welded in position.

Especially where rounded corners are used, offer the particular plate up to the position it is to be used and check or make the correct radius in the plate prior to tack welding .

REFER BACK REGULARLY TO THE DRAWINGS AND CHECK INTERMEDIATE AS WELL AS OVERALL DIMENSIONS.

Now the deck plates, superstructure, fly-bridge where applicable and all other super structure plates can be offered up to the hull and tack-welded into position using the gantry or forklift truck to lift them onto the hull.

Do make sure the support strip(s) under the deck and cabin roofs, where applicable, are placed first in its slot(s) in the frames and beams.

In those cases where professional lifting equipment and space is available, an option would be to tack-weld the superstructure together at floor level, braise temporarily and than lift the entire sub structure onto the hull.

FOR RADIUS CHINE HULLS: Having tack-welded the entire boat together, you now turn your attention to the radius section(s).

We have supplied you with the appropriate amount of section to fit in the left over opening in the hull.

As you checked the metal kit on delivery, you have seen they are all similar sections, just one radius rolled into them.

Now you can carefully hold a section against a position on the opening in the hull and using a helper scribe the plate with a sharp tool or pencil and grind, nibble or cut the edges until the plate fits in position.

Tack-weld into position and continue until all radius plate sections are in place.

CONGRATULATIONS , you are now looking at the shapely result of your perseverance.

Of course you have run into some difficulties during the building process and maybe even cursed a couple of times but it must be clear by now why we told you time and time during this manual ONLY TACK-WELDING . Any possible mistake you may have made was fairly easy to rectify, as you only had to grind a couple of small welds away.

However careful the cutting of the material was prepared and cut, the material can behave unexpectedly, for example the grain in the plate runs diagonal and will resist shaping into the required form. This will require additional effort and force to get the plate to fit.

Although we aim for perfection, mistakes do occur, however the general consensus is that if you have to cut or reshape a plate (with the exception of radius plates) somewhere something is not right.

7. FINISHING THE ASSEMBLY. Now the time has come to finish the welding process.

Firstly, finish welding all the seams between the frame sections applying a full weld. All slotted connections between frames and bottom and side longitudinals are to be welded in full on at least two opposite sides of the connection.

Then apply intermittent welds on all frames and stringers to the hull and superstructure plating using the rule 50 mm. (2") weld, 150 mm. (6") clear, 50 mm. (2") weld. Alternate the weld one side of plate, other side of plate and so on.

DO NOT CONTINUOUSLY WELD ON ONE SIDE OF THE HULL but weld a bit one side, the other side and so on to avoid pulling. Do not underestimate the forces coming free when welding.

Now the hull should be welded.

In case you have not made a 60° "V" between the seams of the plates yet, no problem, use an angle grinder and cutting disc and cut a groove in the plate where the seam is located. Not as nice as having a "V" made first but the result will be the same. As explained before, alternate welding from side to side and finish the welding process.

The hull under the waterline must be welded inside and out. All other welding can be done one side only.

Grind away surplus welding whereby we advise to pre-grind the welds with a heavy duty grinding disc and finish grinding with one of these softer flexible discs, ready available in the trade, to avoid having to use filler on the weld seams.Clean the surface and apply a coat of primer and the basics of your pride and joy are ready for finishing.

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Has anyone actually built a Bruce Roberts power boat?

Discussion in ' Metal Boat Building ' started by Deaf Wolf , Feb 1, 2022 .

Deaf Wolf Junior Member

Has anyone actually built a Bruce Roberts power boat of any size? I was googling on aluminium boat plans and this "bruce roberts.com" pops up on every search lists, no one else. I've looked in the guy's website and I can see the designs are old as 1980's to 1990's, including the large power yachts. I'm also wondering if any of you guys modified or upgraded the plans from him to make it more modern. I've been hearing the pros and cons on Bruce Roberts plans and i'd like your actual takes on this subject.  

Barry Senior Member

You could possibly try these US/Canada suppliers for either a CAD file, or a Flat Pack precut material supplied kit. Active businesses. Metal Boat Kits, Specmar, Cope, Aluminum Boat Kits Direct. What type of boat are you interested in?  

Barry said: ↑ You could possibly try these US/Canada suppliers for either a CAD file, or a Flat Pack precut material supplied kit. Active businesses. Metal Boat Kits, Specmar, Cope, Aluminum Boat Kits Direct. What type of boat are you interested in? Click to expand...

jehardiman Senior Member

Deaf Wolf said: ↑ However, I haven't found any information of passanger capacity of that size, because no matter where I look, it doesn't show how many people can be in the 45' to 65' long vessels without overloading. I was looking into about 20 (I think) people capacity for family reunion, deep sea fishing, and relaxing times. Possibly taking it down the east coast of the intracoastal waterways to the gulf of mexico FL side. Click to expand...

Milehog Clever Quip

Look beyond the dated BR plans. Modern plans have come a long way with better understanding of materials and efficient construction methods. Computer faired CNC cut panels are a huge advantage as well. I suspect you could build a better, more efficient hull in half the time with modern methods.  

Are there other modern design books to go with the aluminium boatbuilding books? What other modern plans that have been made in the web?  

A couple of other books Aluminum Boat Building Ernest sims Metal Boats Roberts-Goodson While not design books per se, the books discuss certain elements of aluminum construction, and hence can "influence" a design to suit the material IF YOU ARE SERIOUS and are actually going to build, I would recommend that you purchase the Standards and Technical Information Reports for Small Craft 2021-2022. Available from ABYC, $500US This is a many hundred page (maybe 350 or more) manual that deals with requirements for almost all the components and systems of a boat. This book has the potential to save you thousands if not more dollars by ensuring that if followed that you will 1) build a safe boat for you and your passengers, 2) having a boat that meets the standards will enable a Marine Surveyor to produce a satisfactory surveyor for insurance coverage 3) give you peace of mind that you did the systems correctly. As the link below from Fram Oil Filter says "pay me now or pay me later" This will not help directly with the design of the hull or quality of the welding. As far as the design is concerned, I am not sure how long it takes to be a certified Naval Architect but would suspect 3 or 4 years and then maybe a few more years of internship. Grabbing a book off the shelf will not let you "design" a boat. Posters often sketch a "boat profile" and submit the sketch to the forum under the auspices that they have designed something. For this reason, the best avenue, and cheapest is to purchase a proven set of plans. That way you get the benefit of having had access to a Naval Architect (assuming that the plan provider has had the plan go through the design process) Note also that many plan providers will issue you a HIN, Hull Identification Number, for one build. This will save countless hours trying to get your boat registered in some states. You should check with yours. It may also help in getting insurance coverage.  

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Barry said: ↑ A couple of other books Aluminum Boat Building Ernest sims Metal Boats Roberts-Goodson While not design books per se, the books discuss certain elements of aluminum construction, and hence can "influence" a design to suit the material IF YOU ARE SERIOUS and are actually going to build, I would recommend that you purchase the Standards and Technical Information Reports for Small Craft 2021-2022. Available from ABYC, $500US This is a many hundred page (maybe 350 or more) manual that deals with requirements for almost all the components and systems of a boat. This book has the potential to save you thousands if not more dollars by ensuring that if followed that you will 1) build a safe boat for you and your passengers, 2) having a boat that meets the standards will enable a Marine Surveyor to produce a satisfactory surveyor for insurance coverage 3) give you peace of mind that you did the systems correctly. As the link below from Fram Oil Filter says "pay me now or pay me later" This will not help directly with the design of the hull or quality of the welding. As far as the design is concerned, I am not sure how long it takes to be a certified Naval Architect but would suspect 3 or 4 years and then maybe a few more years of internship. Grabbing a book off the shelf will not let you "design" a boat. Posters often sketch a "boat profile" and submit the sketch to the forum under the auspices that they have designed something. For this reason, the best avenue, and cheapest is to purchase a proven set of plans. That way you get the benefit of having had access to a Naval Architect (assuming that the plan provider has had the plan go through the design process) Note also that many plan providers will issue you a HIN, Hull Identification Number, for one build. This will save countless hours trying to get your boat registered in some states. You should check with yours. It may also help in getting insurance coverage. Click to expand...

'Steel Boat Repair and Maintenance' Has anyone read this book??? Any thoughts?

My 16' aluminium skiff has a V hull

Which Is The Best Vendor To Purchase Marine Grade Aluminum From?

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Offshore 38 Boat Plan

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• THE DRAFTING TABLE by Robert H. Perry

 THE DRAFTING TABLE by Robert H. Perry

We at Castoff feel very fortunate to be able to bring to our readers his evaluations and comments on designs featured in this section.

Bruce Roberts-Goodson has made his name in the yacht design field as one of the foremost designers of sailing craft for the home builder. It is probably safe to say, that there are more Bruce Roberts-Goodson designs being built by amateur builders than any other designer. Having worked in the field of designing for the home builder myself, let me assure you that it is more demanding of the designer than designing for professional yards. The designer must tell the builder what to do and also just exactly how to do it.  It seems that there is never an end to the questions of the home builder and I used to anticipate the day when I received the letter asking explicit directions on how to wipe a nose.

The ROBERTS 38 was designed for a client in Venezuela as a handicap racer and a family cruiser. To date 300 copies of this plan have been sold. The hull features quite moderate proportions. The keel and skeg are both generous enough to insure easy steering and good tracking. When the designer says "handicap" racing, I’m sure he doesn’t mean I.O.R. The ROBERTS 38 really has no I.O.R. features at all. This actually is a positive selling point in today’s I.O.R. fearing world. To compliment the variety of building materials listed for the hull, the designer has designed the boat in a round bilge or hard chine configuration. This is certainly a plus if you are interested in building a steel or aluminium yacht. I’m sure the round bilge version would be a faster yacht although possibly slightly more tender than the hard chine version.

The interior is offered as a centre cockpit version or as the standard aft cockpit configuration as shown. The drawing shows clearly the arrangement and there is little I can find fault with. The interior shows no effort to crowd in "fad" accommodations. All the areas are roomy and very usable.

In designing a yacht with the sale of stock plans in mind, Roberts must avoid radical features or specialisation that would limit the appeal of the yacht. With this in mind, it is not surprising to find that the overall impression of the ROBERTS 38 is one of a very conservative design. Or, put another way, the extraordinary thing about the ROBERTS 38 is that there is nothing extraordinary about the design. While this may sound a little negative, in this case it is positive and accounts for the tremendous acceptance of the design.

The plans come complete with full size patterns to eliminate the lofting stage. This is sort of like using the cross-country skis that you don’t have to wax, not traditional but increasingly popular. The plans include 30 sheets of drawings with very little left for the imagination. The step by step building procedures are fully outlined in the drawings. If you are the type that enjoys building, and you are contemplating building a yacht, I would advise that you go to a designer that deals solely with the home builder. He will be most understanding of your problems and probably will have answered your questions numerous times. I think Bruce Roberts-Goodson has proven himself many times over in this area.

Reprinted with kind permission from Castoff magazine, Seattle.

 Letter  from a U.S. Offshore 38 Builder.

Mr Bruce Roberts,

I’m ashamed with myself for not writing and sending you pictures of the boat I built from your plans because your design has presented me a very beautiful boat. This boat is complimented in each little harbour we have visited. People on the water have come by to remark on a beautiful boat. Naturally that swells my pride. So you see,- I feel guilty- you should share in the praise this boat has received.

Pictures don’t describe the real entity, but this is all we can offer you now. Maybe our enthusiasm and pleasure described in this letter will help reveal the boat’s real character. I’m not a great sailor but this boat makes me look great. It sails close to wind well, and in a light breeze moves gracefully. In strong winds with smaller sails on it is stiff and swift. I couldn’t be much more comfortable in my easy chair at home. My wife and I handle it quite easily now and we are past the middle years of our lives.

From the time I received the materials from Clark Craft until I put it in the water, 13 months elapsed. During this time I held onto a full time job as a carpenter to give me the money to keep this boat going. Needless to say, I, like many we’ve met since who are building boats, didn’t have all the money at the beginning. Somehow, and strange it is, money seems to come along to build a boat.

Temporarily, we are now living on the boat in Vallejo, and each day and each week we are learning more about the trust we place in this boat. It has faced up to some good challenges and we are again shown the durability this boat has.

I’m glad we chose your design and whenever I’m asked you can be sure I’m happy to say this is a Bruce Roberts design.

A happy boat builder (amateur)

Dick and Dorothy Larson

Roberts Offshore 38

Full plans for this design are available for building in round bilge Fiberglass or Cold Moulded Wood Epoxy. They are also available in Multi-chine for building in Steel or Aluminum. It can be rigged as a cutter or ketch with either a centre cockpit or aft cockpit configuration.

The Roberts Offshore 38 is a solid cruising yacht designed to be handled by a couple and to give a comfortable ride and good all round sailing performance. The complete plans and full size patterns include many sheets of large-scale drawings, plus full-size frame patterns.

The large scale study plan package includes all the rig variations and the general arrangement and accommodation plans for both the centre and aft cockpit versions in full 1/2'' = 1' scale. Included also are construction drawings sheets showing the method required to build her in the material of your choice.

 Version A

Version B  

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• Brand: Bruce Roberts Designs
• Product Code: Offshore 38
• Availability: In Stock

Prices in Australian Dollars (AUD) SP - Study Plans FPP - Full Plan and Patterns

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