The Westerly Windrush 25 represents a pivotal chapter in the early history of fiberglass yacht construction, serving as one of the formative models produced by the British firm Westerly Marine Construction Ltd. during the mid-1960s. Launched in 1966 as a more sophisticated evolution of the popular Westerly 22, the Windrush 25 was designed by the esteemed naval architect Maurice Griffiths, who was renowned for his "shoal draft" philosophy and the ability to design boats that punched well above their weight in terms of seaworthiness. With approximately 144 units produced between 1966 and 1968, the model helped establish the "Westerly look"—characterized by a high freeboard, a robust hull, and the signature bilge keel configuration that allowed the boat to stand upright on its own in tidal drying moorings.
Westerly Windrush 25 Information, Review, Specs

- Make
- Westerly
- Model
- Windrush 25
- Builder
- Westerly Marine Ltd.
- Designer
- Cmdr. Denys A. Rayner
- Number Built
- Production Year(s)
- 1966 - 1968
Sailing Performance & Handling
The Windrush 25 is a quintessential "heavy displacement" small cruiser. While it lacks the nimble acceleration of modern fin-keeled counterparts, it offers a level of stability and "big boat" feel rarely found in 25-footers. The hull features a high ballast ratio, which, combined with the Maurice Griffiths trademark of wide-set bilge keels, provides significant initial stability. This makes the vessel particularly forgiving for novice sailors or families.
Under sail, the masthead sloop rig is easily managed. However, due to its substantial GRP (glass-reinforced plastic) layup and relatively short waterline, the boat is not a light-airs performer. It requires a stiff breeze to truly come alive. Owners often report that the boat tracks exceptionally well for a bilge-keeler, though it will not point as high into the wind as a deep-finned racer. Its sea-kindliness is a standout trait; the Windrush handles choppy coastal waters with a predictable, rhythmic motion rather than the jarring "slamming" found in flatter-bottomed designs.
Interior Comfort & Variations
The Windrush 25 was marketed as a true family cruiser, and its interior reflects a significant upgrade in amenities compared to its predecessors. The layout typically accommodates four adults across a V-berth in the forecabin and two full-length settee berths in the main saloon. Unlike the earlier Westerly 22, the Windrush features a fully enclosed marine toilet (head) compartment, a luxury for a 25-foot boat in the late 1960s.
The galley is compact but functional, usually positioned near the companionway for ventilation, featuring a two-burner stove and a small sink. According to the Westerly Owners Association, the interior was finished with a mix of GRP moldings and wood trim, which has aged remarkably well in many hulls. A key sibling of the Windrush 25 is the Westerly Nomad, which utilized the exact same hull but featured a raised "doghouse" coachroof. While the Windrush focused on sleeker lines and better aesthetics, the Nomad prioritized maximum standing headroom and interior volume.
Known Issues & Buyer’s Checklist
As these vessels are now over 50 years old, several specific technical areas require scrutiny during a pre-purchase inspection:
- Keel-to-Hull Joint: The Windrush uses heavy cast-iron keels bolted through a reinforced GRP hull. Buyers should inspect the "Westerly Smile"—a gap that can appear at the leading edge of the keel—and check for any weeping around the internal keel bolts, which may indicate the need for re-seating or new bolts.
- Original Engines: Many Windrush 25s were originally fitted with Volvo Penta MD1 or MD2 diesel engines. While legendary for their durability, parts are becoming scarce. A boat that has been "re-powered" with a modern Yanmar or Beta Marine diesel is significantly more valuable.
- Window Leaks: The original alloy-framed windows are prone to seal failure. If left unaddressed, this leads to significant damage to the interior wood cabinetry.
- Deck Softness: While the hulls are solid GRP, the decks often utilized a balsa core in certain sections. A thorough "tap test" or moisture meter reading is necessary to ensure the core hasn't delaminated or rotted.
Community & Resources
The model is supported by one of the most active owner groups in the maritime world, the Westerly Owners Association. This organization maintains an extensive technical library and a parts-sourcing network that is vital for maintaining these classic yachts.
The Verdict
The Westerly Windrush 25 is a rugged, honest cruiser that offers an entry-level price point for those seeking a "pocket" blue-water vessel. While it will never win a line-honors race, its ability to take the ground and its robust construction make it a premier choice for coastal exploration.
Pros:
- Extremely stable and forgiving handling in heavy weather.
- Bilge keels allow for low-cost drying moorings and beaching.
- Exceptional build quality with a thick, solid GRP hull.
- Strong community support and parts availability.
Cons:
- Poor performance in light winds and limited upwind ability.
- The age of the fleet means many units require significant cosmetic or engine updates.
- Cramped headroom for sailors over 6 feet tall compared to the "Nomad" variant.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Triple
- Rudder
- 1x —
- Ballast
- 1450 lbs
- Displacement
- 4817 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 25.08 ft
- Waterline Length (LWL)
- 21 ft
- Beam
- 7.42 ft
- Draft
- 2.5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- -
Calculations
- Sail Area / Displacement (SA/D) Ratio
- —
- Ballast / Displacement Ratio
- 30.1
- Displacement / Length Ratio (D/L) Ratio
- 232.2
- Comfort Ratio
- 23.2
- Capsize Screening Formula
- 1.76
- Hull Speed
- 6.14 kn