Design and Construction
Both hull and deck are solid fibreglass, and the boat carries a triple-keel arrangement that Westerly helped popularize on glassfibre sailboats from the mid-1960s. With a length overall of just over 25 feet and a waterline of 21 feet, the Westerly 25 draws only about 2.5 feet loaded, letting her tuck into shallow marinas that deeper fin-keelers cannot reach shallow-draft triple keel. Her ballast ratio sits at 36 percent against a displacement of 4,000 pounds, with 1,450 pounds of iron ballast, and her length-to-beam ratio of 3.38 describes a relatively narrow hull by modern standards. The wetted surface of the bottom is about 150 square feet, and the immersion rate of roughly 542 pounds per inch gives a clear sense of how loading shifts her trim.
Rig and Handling
The Westerly 25 is a masthead sloop carrying 275 square feet of sail area, which yields a sail-area-to-displacement ratio of 17.46 — modest, and consistent with her categorisation among moderate racers by displacement-length ratio (about 193). Period specification records the running rigging in useful detail: jib and genoa sheets of 25.1 feet at 3/8-inch diameter, a 62.7-foot mainsheet of the same diameter, and a 55.1-foot spinnaker sheet documented sheet dimensions. Her capsize screening value of 1.87 and motion comfort ratio of 19.2 place her in the stable, gentle-motion band for a boat of this size. The theoretical hull speed is 6.1 knots, while the calculated maximum under a Volvo Penta MD1 diesel is about 4.5 knots; an outboard is often fitted for docking and maneuvering.
Accommodations
Below, the Westerly 25 provides four berths together with a galley and a toilet facility, and the interior is finished in mahogany much like many of her contemporaries. The accommodation is functional coastal-cruiser fare rather than lavish, but the berth count and separate head give her a genuine weekending capability for a couple with children or two short-handed couples.
Refits and Ownership
The builder offered different engine alternatives over the production run, and many owners have favored an outboard for low-speed control in harbours. The shallow draft and solid-glass construction make her a straightforward boat to keep on a swinging mooring or a drying berth, though any used example will reward a close look at the original laminate and the triple-keel roots.
The Verdict
The Westerly 25 is an early, honest British glassfibre cruiser whose triple keel and shallow draft remain her defining practical virtues. She is stable and comfortable for her length, easy to shelter in shallow water, and simply appointed below. Her modest sail plan and low-powered auxiliary suit relaxed coastal sailing more than spirited racing.
Pros
- Triple-keel, ~2.5-foot draft opens shallow marinas and drying berths
- Solid fibreglass hull and deck
- Stable motion and capsize screening suited to family coastal cruising
- Four berths with galley and head for weekending
Cons
- Modest sail-area-to-displacement ratio limits light-air performance
- Low auxiliary speed under diesel (about 4.5 knots max)
- Narrow beam and 1960s accommodation scale feel dated today
