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1978 Bruce Roberts Offshore 38

Listed
Expired
$35,000 USD

Seller's Description

Bought in 2007 engine failed most sytems dead or dying. First thing was to replace the engine Volvo MD17 which required pulling half the interior out. Found various problems and removed the rest of the interior. Installed a brand new Beta Marine 38 new shaft dripless seal and a 3 bladed Max prop. Ran for two hours motoring round waiting to get lifted out in the fall of 2019. The interior has been roughed in with angle iron boat is steel hulled in the main cabinGalleyChart tablecooler. Working hard to get ready to retire didn’t have much time to work on her. Finally retired knees went bad had two heart attacks in 2023 last one about 2 weeks ago. This is a project boat a good ocean going sailboat. I was going to sail the world that dream is now dead. She is on a cradle ready to be moved.I have various gear spread over 2 locations. Enough to put her together and in the water. There is no mainsail that was weathered so bad it disintegrated. Be serious about taking on the task of getting her finished.

Specs

Designer
Raymond Richards
Builder
Cheoy Lee Shipyard
Association
Cheoy Lee Association Web Site
# Built
?
Hull
Monohull
Keel
Long
Rudder
?
Construction
FG

Dimensions

Length Overall
37 11 / 11.6 m
Waterline Length
30 8 / 9.4 m
Beam
10 11 / 3.4 m
Draft
4 11 / 1.5 m
Displacement
18,800 lb / 8,528 kg
Ballast
?

Rig and Sails

Type
Sloop
Reported Sail Area
684′² / 63.6 m²
Total Sail Area
684′² / 63.6 m²
Mainsail
Sail Area
293′² / 27.2 m²
P
42 9 / 13.1 m
E
13 8 / 4.2 m
Air Draft
?
Foresail
Sail Area
391′² / 36.3 m²
I
47 11 / 14.6 m
J
16 3 / 5 m
Forestay Length
50 8 / 15.5 m

Auxilary Power

Make
60 hp diesel
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
7.8 kn
Classic: 7.42 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

7.84 knots
Classic formula: 7.42 knots
Sail Area/Displacement
15.5
<16: under powered

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.
15.48
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
?

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

?
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
290.8
200-300: moderate

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
290.77
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
32.1
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
32.05
<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
1.8
<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
1.81
<2: better suited for ocean passages
>2: better suited for coastal cruising

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