RM 1180

Name: RM 1180
Brand: RM Yachts

In production

1 / 12

MasterC-RM-204 — RM Yachts

Design

Naval architect: Marc Lombard Design Group

Summary

Sailing MonohullSail

Hull length: 38.7 ft
Beam: 14.3 ft
Draft: 6.4–7.4 ft
Air draft: 62.3 ft
Displacement: 16,976 lb
Sail area (upwind): 969 ft²
Cabins: 3

* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.

Best Suited For

Short-Handed
From the published figures: hull length 11.8 m · upwind 90 m²

Tags are derived from certified class, length, sail area, accommodation and tankage using the criteria described on the Sources page; an editor may add or remove one.

Sailing Ratios

Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.

Sail area / displacement

How much sail the boat carries for its weight — its power in light air.

23.5· Performance

How it is worked out

sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔

published upwind sail area

Displacement / length

How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.

not published: waterline length

How it is worked out

displacement (long tons) ÷ (0.01 × waterline length in ft)³

Ballast ratio

The share of the weight carried in the keel — a rough guide to stiffness, though how deep that weight sits matters as much.

not published: ballast

How it is worked out

ballast ÷ displacement × 100

Comfort ratio

Ted Brewer's measure of how gently a boat moves in a seaway. Higher means a slower, easier motion.

not published: waterline length

How it is worked out

displacement (lb) ÷ (0.65 × (0.7 × LWL + 0.3 × LOA) × beam^1.333), lengths in ft

Capsize screening

A guide from the inquiry after the 1979 Fastnet race: below 2 was taken as suited to ocean passages. It ignores hull shape and where the ballast sits.

2.23· 2 and above

How it is worked out

beam (ft) ÷ (displacement as ft³ of seawater)^⅓

Hull speed

Roughly the speed a displacement hull reaches before it has to climb its own bow wave.

not published: waterline length

How it is worked out

1.34 × √(waterline length in ft), in knots

Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.

Tanks

What the builder publishes about how fast, how strong and how much the boat carries.

Fuel and water on one scale: a tank twice the height holds twice as much.

Fuel32 gal
Water71 gal

Dimensions

LOA: —
Hull length: 38.7 ft (11.8 m)
LWL: —
Beam: 14.3 ft (4.37 m)
Draft (min): 6.4 ft (1.95 m)
Draft (max): 7.4 ft (2.25 m)
Air draft: 62.3 ft (19 m)
Displacement: 16,976 lb (7,700 kg)
Ballast: —
Cabins: 3
Heads: —
Berths: —

Sail Plan

Main sail: 495 ft² (46 m²)
Jib: —
Genoa: 474 ft² (44 m²)
Sail area: 969 ft² (90 m²)
Downwind sail area: —
Rig type: —

Engine and Tanks

Engine: —
Engine count: 1
Engine manufacturer: Volvo Penta
Propulsion type: saildrive
Fuel capacity: 32 gal (120 L)
Fresh water capacity: 71 gal (270 L)
Black water capacity: 15 gal (55 L)

Construction

Mast material: —
Hull material: plywood-epoxy
Deck material: —
Keel type: —
Rudder type: —
Steering wheels: —

Builder's Own Figures

Upwind sail area: mainsail + genoa
Keel options: single keel draft: 2,25M; twin keel draft: 1,95M
Hull material: plywood-epoxy (site: 'plywood-epoxy sailboat construction'; the page itself prints no material)
Sail plan: mainsail 46M²; furling genoa 44M²; asymmetric spinnaker 150M²
Engine: Volvo Penta 50 CV (CV = metric horsepower; not entered as hp)
Architect: Marc Lombard Design Group
Conception: Edouard Delamare Deboutteville
Displacement basis: light displacement

Figures read fromrm-yachts.com/en/rm-1180/· Technical specificationsread 9/13/2026

About RM Yachts

Semi-custom

French builder of plywood-epoxy performance cruising yachts from 30 to 45 feet — the RM 890+, 980, 1080, 1180 and 1380, all drawn by Marc Lombard — building at La Rochelle since 1989, with more than 600 boats sailing.

RM has been building since 1989, and the yard's own archive of every model it has made since then counts more than 600 RM sailing today, around the world.

Visit brand page

The RM Yachts Range

Every model RM Yachts publishes, by length — where this one sits in the range.

By the Same Designers

Boats this boat's designers also drew, for other builders too. Credits are grouped only where the names clearly agree, however each builder spelled them; an unclear one is left out.