Lord Nelson 35

1984
Designer
Tommy Chen
Builders
Hai O Yachts (Taiwan)
Lord Nelson Yachts
Associations
?
# Built
35
Hull
Monohull
Keel
Long
Rudder
?
Construction
FG

Dimensions

Length Overall
42 9 / 13.1 m
Length On Deck
35 9 / 10.9 m
Waterline Length
31 3 / 9.6 m
Beam
11 10 / 3.6 m
Draft
5 3 / 1.6 m
Displacement
20,500 lb / 9,299 kg
Ballast
7,000 lb / 3,175 kg (Iron)
Drawing of Lord Nelson 35

Rig and Sails

Type
Cutter
Reported Sail Area
780′² / 72.5 m²
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Air Draft
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

Make
Yanmar
Model
3HM35F
HP
32
Fuel Type
90
Fuel Capacity
80 gal / 302 l

Accomodations

Water Capacity
130 gal / 492 l
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
7.9 kn
Classic: 7.5 kn

Hull Speed

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.

Formula

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

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

7.86 knots
Classic formula: 7.5 knots
Sail Area/Displacement
16.7
16-20: good performance

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.

Formula

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.
16.66
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
34.1
<40: less stiff, less powerful

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.

Formula

Ballast / Displacement * 100

34.14
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
297.6
275-350: heavy

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.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
297.55
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
33.6
30-40: moderate bluewater cruising boat

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.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
33.62
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
1.7
<2.0: better suited for ocean passages

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.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
1.73
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

From BlueWaterBoats.org:

Developed by Loren Hart who founded Lord Nelson Yachts with his wife Lani in 1982, the Lord Nelson 35 (introduced a couple of years later in 1984) was one of two sailboat offerings by the company. The boat is well known in cruising circles for its close heritage to the Hans Christian line of boats, they’re super-solid and super-heavy double-ended cruisers with that salty old-world styling which the Westsail 32 and Tayana 37 made so popular. Like many boats of that era, the Nelson 35 was built in Taiwan, in this case by Hai O Yachts under the direction of one of their partners and the eventual designer of the boat, Tommy Chen. (Tommy also had a hand in the Hans Christian boats.)

With a regal name like Lord Nelson, the interiors are suitably large and well laid out with ample stowage for extended voyaging. Build quality is superb with lots of attention to detail. You can also expect oodles of teak, both inside and out, all of which add up to strikingly beautiful boat with the penalty of higher maintenance needs.

The hull form of the Lord Nelson 35 draws much in common with the Hans Christian 33 Traditional, but with flatter aft sections to reduce the hobby-horsing tendency that the Hans Christian is known for. Below the waterline is a very full keel running from bow to stern and a well protected rudder that is hung well aft. Above the springy sheerline sits a ‘proper’ cutter rig with its large fore-triangle opened up by the use of a long 7 foot bowsprit.

As a cruiser very much planted in the heavy end of the spectrum, the Lord Nelson 35 has a nice easy motion through the water, but requires a decent breeze to exploit its full hull speed. They sail best on a reach while beating upwind in heavier seas is known as its weakest point of sail. Most owners would agree the boat is not considered fast, but conversely the boat is cannot be considered slow either, 8 knots is achievable with wind on the beam.

In all only 35 boats were produced, the rumor was that the cost of production became an issue. Lord Nelson Yachts went on to produce tugboats and the company itself eventually passed into the hands of Tommy Chen, who had been first to oversee manufacturing in his Taiwanese boatyard.

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