tradewind 35 sailboat data

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• Tradewind 35

The Tradewind 35 Sailboat Specs & Key Performance Indicators

The Tradewind 35, a long-keeled cutter, was designed by John Rock and built in the UK by Blondecell Ltd.

Published Specification for the Tradewind 35

Underwater Profile:  Long keel

Hull Material:  GRP (Fiberglass)

Length Overall:  35'0" (10.67m)

Waterline Length:  25'10" (7.87m)

Beam:  10'6" (3.2m)

Draft:  5'6" (1.68m)

Rig Type:  Cutter

Displacement:  19,442lb (8,819kg)

Designer:  John Rock

Builder:  Blondecell (UK)

Year First Built:  1975

Number Built:  70

Published Design Ratios for the Tradewind 35

Sail Area/Dis placement Ratio:  16.1

Ballast/Displacement Ratio:  42.6

Displacement/Length Ratio:  504

Comfort Ratio:  45.9

Capsize Screening Formula:   1.6

read more about these all-revealing numbers...

Summary Analysis of the Design Ratios for the Tradewind 35

1. A Sail Area/Displacement Ratio of 16.1 suggests that the Tradewind 35 will, in the right conditions, approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.

2. A Ballast/Displacement Ratio of 42.6 means that the Tradewind 35 will stand up well to her canvas in a blow, helping her to power through the waves.

3. A massive Displacement/Length Ratio of 504, tells us the Tradewind 35 is firmly in the ultra-heavy displacement category. Load her up as much as you like and her performance will be hardly affected, not that it was ever startling. Few if any sailboats are built to this displacement category these days - but they remain popular with some long-distance sailors.

4. Ted Brewer's Comfort Ratio of 45.9 suggests that crew comfort of a Tradewind 35 in a seaway is similar to what you would associate with the motion of a heavy bluewater cruising boat. Pitching and rolling will be well damped - your cup of coffee on the salon table stands a reasonable chance of staying there in most conditions.

5. The Capsize Screening Formula (CSF) of 1.6 tells us that a Tradewind 35 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.

Tradewind 35 Sailboat: A Classic Ocean Cruiser

If you are looking for a sailboat that can take you anywhere in the world, you might want to consider the Tradewind 35. This is a classic ocean cruising yacht, with a 30-year pedigree. Designed by John Rock and built by Tradewind Yachts, the Tradewind 35 is a sturdy, seaworthy and comfortable boat that will inspire complete confidence in any sailor.

Overview The Tradewind 35 is a cutter-rigged monohull with a long keel and a heavy displacement. It has a solid fiberglass hull with encapsulated internal ballast and a balsa/ply cored deck. It is 10.7 meters long overall, with a waterline length of 7.9 meters, a beam of 3.2 meters and a draft of 1.7 meters. It has a displacement of 8,819 kilograms and a ballast of 3,759 kilograms. The reported sail area is 67.4 square meters.

The Tradewind 35 was originally designed in the 1970s, but new boats continue to be built today. It is thought that at least 70 of this type exist. The Tradewind 35 is also known as the Tradewind 33, as it was originally marketed under that name.

Accommodation The Tradewind 35 has a spacious and cozy interior, with plenty of headroom and storage space. It can accommodate up to six people in two separate cabins and the saloon. The forward cabin has a V-berth with an infill cushion, a hanging locker and shelves. The aft cabin has a double berth, a hanging locker and shelves. The saloon has two settees that can convert into single berths, a folding table and lockers. The navigation station is located on the starboard side of the saloon, with a large chart table, an instrument panel and a seat. The galley is located on the port side of the saloon, with a two-burner stove with oven, a sink, a refrigerator and ample counter space and storage. The head is located aft of the navigation station, with a marine toilet, a sink and a shower.

Hull and Deck The hull of the Tradewind 35 is made of solid fiberglass, with no core or filler materials. The ballast is encapsulated in the keel cavity, which eliminates the possibility of keel bolts corrosion or leakage. The deck is made of balsa/ply sandwich construction, which provides strength and insulation. The deck is also reinforced with hardwood pads where fittings are attached.

The deck layout of the Tradewind 35 is simple and functional, with wide side decks, high bulwarks and sturdy handrails for safety and comfort. The cockpit is deep and well protected, with high coamings and a dodger. The cockpit can be accessed from either side or from the transom. The cockpit has a single wheel steering system, with engine controls and instruments on the pedestal. There are also two large cockpit lockers for storage.

The deck hardware of the Tradewind 35 is of high quality and well maintained. There are four self-tailing winches for the headsails and two winches for the mainsail on the coachroof. There are also two winches for the running backstays on the aft quarters. The boat has stainless steel stanchions, lifelines, pulpits and pushpits. There are also six mooring cleats, two bow rollers, an anchor locker, an electric windlass and an anchor washdown system.

Mast and Rigging The mast of the Tradewind 35 is made of aluminum alloy and is keel-stepped for extra strength and stability. The mast has two sets of spreaders and is supported by stainless steel wire rigging with swaged terminals. The mast has an internal conduit for wiring and halyards.

The rig of the Tradewind 35 is a cutter rig, which means it has two headsails: a genoa and a staysail. The genoa is roller-furled on the forestay, while the staysail is hanked on to an inner forestay that can be tensioned or released by running backstays. The mainsail is slab-reefed on the boom, with three reef points and lazy jacks.

The sails of the Tradewind 35 are made of dacron fabric and are in good condition. They include a mainsail, a genoa, a staysail, a storm jib and an asymmetric spinnaker.

Keel and Rudder The keel of the Tradewind 35 is a long keel that runs almost the entire length of the hull. This gives the boat excellent directional stability and tracking ability, as well as protection for the propeller and the rudder. The keel has a moderate draft of 1.7 meters, which allows the boat to access most harbors and anchorages.

The rudder of the Tradewind 35 is a skeg-hung rudder, which means it is attached to a fin that extends from the keel. This provides additional support and strength for the rudder, as well as protection from grounding and collision. The rudder is controlled by a single wheel in the cockpit, with a cable and quadrant system.

Conclusion The Tradewind 35 is a classic ocean cruising yacht that offers a combination of performance, comfort and safety. It is a well-built, well-equipped and well-maintained boat that can handle any weather and sea condition. It is ideal for recreational sailors who want to explore the world in style and confidence.

This article was written with the assistance of Gemini, a large language model developed by Google. Gemini was used to gather information, summarize research findings, and provide suggestions for the content and structure of the article.

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TRADEWIND 35

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Tradewind 35

The tradewind 35 is a 35.01ft cutter designed by john rock and built in fiberglass by tradewind yachts (nl) since 1975., 70 units have been built..

The Tradewind 35 is a very heavy sailboat which is a reasonably good performer. It is very stable / stiff and has an excellent righting capability if capsized. It is best suited as a heavy bluewater cruising boat. The fuel capacity is originally small. There is a short water supply range.

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Review of Tradewind 35

Basic specs.

Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.

The boat is equipped with 340.0 liter fresh water capacity.

The Tradewind 35 is equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

The Tradewind 35 is equipped with a long keel. A full keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.

The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.

The boat can enter most marinas as the draft is just about 1.68 - 1.78 meter (5.51 - 5.81 ft) dependent on the load. See immersion rate below.

Tradewind 35 may be equipped with an inboard Yanmar 3GM30F diesel engine at 27 hp (20 kW). Calculated max speed is about 4.4 knots

The fuel tank has a capacity of 182.0 liters (48 US gallons, 40 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for Tradewind 35 is 1.56, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.8 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Tradewind 35 is about 168 kg/cm, alternatively 944 lbs/inch. Meaning: if you load 168 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 944 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is a Ballast Ratio?

What is Displacement Length Ratio?

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 29m 2 (312 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

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• Sailboat Guide

Tradewind 35

Tradewind 35 is a 35 ′ 0 ″ / 10.7 m monohull sailboat designed by John Rock and built by Tradewind Yachts starting in 1975.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Though designed in the 1970’s, (or possibly before), new boats continue to be built. It is thought that at least 70 of this type exist. Originally the TRADEWIND 33.

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Tradewind 35.

Introducing the Tradewind 35, a renowned cruising yacht with a distinguished 20-year heritage. This highly acclaimed John Rock design embodies all the tried-and-true features that inspire complete confidence. With its long keel and heavy displacement, the Tradewind 35 offers exceptional sea-keeping and handling, making every voyage a pleasure.

This particular vessel, ‘Brass Monkey,’ is in pristine condition and fully equipped for blue water cruising. Recent upgrades include: New standing rigging, Raymarine Axiom Pro 9 at the helm, Raymarine Doppler radar, Hydrovane wind self-steering, Marlec wind generator, Flexi 50-watt solar panel with remote control at the nav station, new service and engine start batteries.

Currently located in Antigua, ‘Brass Monkey’ is the complete blue water yachting package. Don’t miss this opportunity to own a yacht that combines exceptional performance with outstanding features.

Boat Details

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Madeleine Dichler

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Red Ensign, Port Pendennis Marina, Challenger Quay, Falmouth, Cornwall, UK

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