1983 Westerly Sealord 39

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1983 Westerly Sealord 39

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1983 Westerly Sealord 39

Boat Overview

Boat Description

Westerly Sealord 39 — A Timeless Blue-Water Cruiser Built for Ocean Crossings

1. General Information

The Westerly Sealord 39 is a sturdy, centre-cockpit cruising sailboat that has earned a loyal following among offshore sailors and liveaboard cruisers since her introduction in 1983. Built by the well-established Westerly Yachts of England and designed by the renowned naval architect Ed Dubois, the Sealord 39 was conceived with one clear purpose: to carry her crew safely and comfortably across open water. Forty-two hulls were completed between 1983 and 1987, a modest production run that reflects her status as a purposeful, semi-custom blue-water yacht rather than a mass-market production boat.

At 11.73 metres (38'6") length overall with a waterline length of 9.9 metres, a beam of 4.01 metres and a displacement of around 8.4 tonnes, the Sealord 39 sits comfortably in the heavy-displacement, offshore-capable category. Her generous ballast ratio of roughly 43% delivers the stiffness and stability that long-distance sailors prize when conditions turn boisterous. Below decks, the layout typically comprises two or three cabins, a spacious saloon with sea berths, a practical galley to starboard, a dedicated navigation station, and two heads — an unusually generous arrangement for a boat of this size, and one that supports genuine liveaboard cruising rather than short coastal hops.

The ideal owner of a Sealord 39 is a couple or small family planning an Atlantic circuit, a circumnavigation, or extended liveaboard cruising, who values seaworthiness, storage capacity and easy sail handling over outright speed. She is equally at home as a capable, affordable entry point into serious blue-water sailing for those stepping up from coastal cruisers.

2. Construction and Design

The Sealord 39 was built with a strong emphasis on durability and long-term serviceability. Her hull and deck are laid up in GRP (glass-reinforced polyester), a construction method chosen for its resilience against the rigours of ocean passages and its comparatively low maintenance burden over decades of use. The fin keel, offered without a bulb, combined with a semi-balanced spade rudder, gives a good balance between directional stability and manoeuvrability — an important consideration for a boat intended to be sailed short-handed on long passages.

Ed Dubois' design brief prioritised a deep, protected centre cockpit that shields the crew from the elements during heavy offshore weather, a hallmark of proper passage-making yachts of her era. Internally, the joinery favours practicality and comfort over showroom flash: solid sea berths with lee cloths, a forward-facing chart table for serious navigation, and a well-thought-out galley designed to work well when the boat is heeled. The masthead sloop rig, carried on a deck-stepped aluminium mast with a single set of spreaders, is straightforward to handle and easy to reef, making the boat approachable for cruising couples rather than requiring a large crew.

3. Key Features

Centre-cockpit blue-water layout: The protected cockpit position keeps the crew drier and safer in rough conditions, while freeing up the aft section of the hull for a generous owner's cabin — a configuration much loved by long-distance cruisers.

Ed Dubois pedigree: Designed by one of the most respected naval architects of his generation, the Sealord 39 benefits from proven offshore sailing manners and a hull shape optimised for comfortable motion at sea.

Robust GRP construction: The glass-reinforced polyester hull and deck are built to withstand decades of hard offshore use, and many examples today have been further reinforced with modern anti-fouling and hull-protection treatments.

Practical two-heads, multi-cabin accommodation: With two heads and a flexible cabin arrangement including a full-beam aft cabin, she comfortably supports liveaboard cruising for a couple, with room for guests or crew.

Easily handled masthead sloop rig: A double-spreader masthead rig with slab-reefing mainsail and genoa furling keeps sail handling manageable for short-handed crews, without sacrificing the sail area needed for genuine offshore passage-making.

4. Summary

The Westerly Sealord 39 speaks to sailors who put seaworthiness, comfort and long-term reliability above outright performance or modern styling. She suits the cruising couple preparing for an Atlantic crossing, the liveaboard sailor seeking a spacious and forgiving platform, and the budget-conscious offshore sailor who wants proven blue-water credentials without the price tag of a custom-built yacht. For anyone drawn to the idea of a stout, well-mannered centre-cockpit cruiser with a genuine pedigree, the Sealord 39 remains a highly credible choice more than three decades after she first took to the water.

Specs

Main
MakerWesterly
ModelSealord 39
First built hull1983
Last built hull1987
VersionSloop
Boat typeSail
CategoryCruiser BoatsCenter Cockpit BoatsSloop Boats
Hull typeMonohull
Hull materialComposite_Material
Cabins2
Births8
Heads2
General
Top speed12.3 kmh
Mast height15.34 m
Length overall11.77 m
Length at waterline9.94 m
Beam overall4.02 m
Draft maximum1.71 m
Displacement8,392 kg
Ballast weight3,629 kg
Helm1 wheel
Rudder1 spade rudder
CockpitCentral cockpit
Designer
Naval architect
Name/StudioEdward Dubois
Rig & Sails
Mast50.33
SparsMast and boom in Aluminum
Standing rigging1x19 strand wire continuous
Number of spreaders1
Spreaders angle0 °
Upwind sail area89.84 sq.m
Downwind sail area169.83 sq.m
Mainsail A352 ft²
Headsail A615 ft²
Headsail B352 ft²
Headsail C217 ft²
Headsail D125 ft²
Headsail E1476 ft²
Headsail F1071 ft²
Engine
Engine A
FuelDiesel
TypeInboard
Storage
Fuel tank A202.14 liter
Water tank A495.13 liter

Performance & Ratios

Detail
Sail Area to Displacement (SA/D) 0.05
Upwind SA to Displacement22.13
Downwind SA to Displacement41.83
Hull Displacement Speed 0.05
Displacement to Length (D/L) 7.65
Ballast to Displacement (B/D) 0.43
Capsize Screening Formula (CSF) 2