Beneteau Oceanis 37.1 is a 39′ 1″ / 11.9 m sailboat designed by Marc Lombard and built by Beneteau starting in 2023.
- Designer
- Marc Lombard
- Builder
- Beneteau
- Associations
- ?
- # Built
- ?
- Hull
- ?
- Keel
- Fin + Bulb
- Rudder
- Twin
- Construction
- FG
Dimensions
- Length Overall
- 39′ 1″ / 11.9 m
- Length On Deck
- 36′ 0″ / 11 m
- Waterline Length
- 35′ 6″ / 10.8 m
- Beam
- 12′ 10″ / 3.9 m
- Draft
- 6′ 10″ / 2.1 m
- Displacement
- 15,130 lb / 6,864 kg
- Ballast
- 3,970 lb / 1,800 kg (Cast iron)
Rig and Sails
- Type
- Fractional Sloop
- Reported Sail Area
- 646′² / 60 m²
- Total Sail Area
- 648′² / 60.2 m²
Mainsail
- Sail Area
- 333′² / 30.9 m²
- P
- 45′ 1″ / 13.8 m
- E
- 14′ 9″ / 4.5 m
- Air Draft
- 54′ 5″ / 16.6 m
Foresail
- Sail Area
- 315′² / 29.3 m²
- I
- 44′ 3″ / 13.5 m
- J
- 14′ 2″ / 4.3 m
- Forestay Length
- 46′ 6″ / 14.2 m
Auxilary Power
- Make
- Yanmar
- Model
- ?
- HP
- 40
- Fuel Type
- Diesel; Saildrive
- Fuel Capacity
- 34 gal / 130 l
Accomodations
- Water Capacity
- 94 gal / 355 l
- Holding Tank Capacity
- ?
- Headroom
- 6′ 3″ / 1.9 m
- Cabins
- ?
Calculations
- Hull Speed
-
10.4 kn
Classic: 7.99 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
- Sail Area/Displacement
-
16.9
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.
- Ballast/Displacement
-
26.2
<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
- Displacement/Length
-
150.6
100-200: light
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
- Comfort Ratio
-
21.1
20-30: coastal cruiser
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
- Capsize Screening
-
2.1
>2.0: better suited for coastal cruising
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
Notes
First built 2023, model year 2024.
Outside and interior design: Nauta Design
Available with Torqeedo Pod 48v FP 12 kW (16 hp) motor
Shallow keel:
- Draft: 1.63 m / 5.33 ft
- Ballast: 1,970 kg / 4,342 lbs
Sail area:
- Main: 37 m² / 398 ft²
- Furling main (option): 31 m² / 333 ft²
- Self-tacking jib (std): 23 m² / 248 ft²
- Furling genoa (110%): 30 m² / 323 ft²
- Code 0: 53 m² / 570 ft²
- Asym Spinnaker: 95 m² / 1,022 ft²
Rig measurements for the roller furling mast:
I - 13.43 m / 44.08 ft
J - 4.33 m / 14.17 ft
P - 13.9 m / 45.58 ft
E - 4.8 m / 15.75 ft
