Thames Marine Mirage 29

Thames Marine Mirage 29

The Thames Marine Mirage 29 is a British glassfibre masthead‑sloop cruising yacht of roughly 29 feet, first built in 1983 by Thames Marine in Essex. It is defined by a twin‑keel underbody, moderate beam, and shallow draft of about 1.14 m, aimed squarely at shoal and tidal waters. Published records give a displacement around 3,750 kg and ballast near 1,610 kg, placing the boat in the medium‑weight coastal‑cruiser bracket rather than as a lightweight racer. Although often overshadowed by the unrelated Canadian Mirage 29, the Thames Marine variant has carved out a niche among British sailors who value the ability to dry out upright between tides while retaining full‑keel cruising accommodation.

Origins and design

Thames Marine developed the Mirage 29 as part of its long‑running Mirage family of fiberglass cruisers, with the twin‑keel version documented as entering production in 1983. A specifications database records key dimensions as 8.79 m LOA, 7.70 m LWL, 3.20 m beam, and the characteristic 1.14 m maximum draft on twin keels. The rig is a masthead sloop with total sail area reported around 32.8 m², a conservative plan that matches the boat’s cruising brief and moderate sail‑area‑to‑displacement ratio. The design is powered by an inboard Volvo Penta diesel of about 18 hp, further underlining its orientation toward dependable coastal passagemaking rather than performance sailing.

Construction and layout

The hull is moulded in glass‑reinforced plastic with internal wood trim, following the mass‑production practices Thames Marine had refined on earlier Mirage models. The rudder is an external dagger‑type blade, stern‑mounted on pintles, a traditional arrangement that simplifies maintenance and repair for owners working in small yards. An owner report from the bilge‑keel yacht Sudana notes hull laminate thickness of roughly 8 mm in way of the skin fittings, a detail that suggests a reassuringly robust lay‑up for a boat of this size. Sudana’s interior fit‑out, with a galley containing the main domestic batteries and a dedicated engine start battery in the cockpit locker, confirms that the class supports typical small‑cruiser amenities and electrical upgrades without structural difficulty.

Variants and naming confusions

Thames Marine’s published dimensions and contemporary directories describe the Mirage 29 in the United Kingdom as a twin‑keel design, a configuration British sailors commonly refer to as a bilge‑keel yacht. The Sudana owner explicitly identifies the boat as a bilge‑keel pleasure yacht with a shallow skeg, confirming that at least some examples were delivered or recorded in this form. A separate specifications database lists a Mirage 29 (UK) with the same beam, draft, displacement, and sail area figures, reinforcing that these twin‑keel numbers are the accepted baseline for the Thames Marine design. Confusion arises because the French‑designed, Canadian‑built Mirage 29, a fin‑keel yacht with a spade rudder and different displacement, shares the name and similar dimensions but is explicitly identified in its own record as unrelated to the British Thames Marine boat.

Sailing character and ownership

The Thames Marine Mirage 29 carries an average PHRF handicap around 177, a value that aligns with its role as a moderate‑performance cruiser rather than a pure racing machine. Its shallow twin keels and relatively long waterline, yielding a hull speed near 6.7 knots, make it well‑suited to crossing drying channels and sitting comfortably aground between tides in typical British estuaries. The owner of Sudana describes the bilge‑keel arrangement as “perfect” for exploring tidal areas, a paraphrased endorsement that highlights how the keel design translates directly into cruising freedom along sandbanks and mudflats. A budget‑minded classified listing for a bilge‑keel Mirage 29, advertised with the promise “first to come first to sail away,” suggests that the type has often been positioned as an accessible entry into proper cruising‑yacht ownership rather than as a prestige object.

Production and legacy

Documented data place the introduction of the Mirage 29 in 1983, but surviving boats such as the 1986‑built Sudana show that production continued at least into the middle of that decade. A later sales listing for a bilge‑keel Thames Marine Mirage 29 also cites 1986 as the year of build, independently corroborating that the model was still leaving the yard around that time. No reliable figure for total numbers built has surfaced in published directories, and the absence of firm records from the builder means any claimed production total would be speculative and has therefore been omitted here. What is clear from owner narratives and occasional brokerage appearances is that the Thames Marine Mirage 29 has persisted as a workmanlike, tide‑friendly cruiser whose real appeal lies less in headline performance than in the freedom it offers to nose into drying harbours that deeper‑keeled yachts must avoid.

Conclusion

Taken together, the surviving documentation and owner accounts portray the Thames Marine Mirage 29 as a thoroughly British answer to the problem of comfortable cruising in shallow, tidal waters. Its twin‑keel underbody, modest rig, and sturdy glassfibre construction combine into a boat that may be unassuming in appearance yet cleverly tuned to the realities of sandbank‑strewn estuaries and crowded drying moorings. While sharing a name with the sleeker Canadian Mirage 29 has muddied its historical trail, careful reading of the specifications and firsthand reports re‑establishes the Thames Marine design as a distinct, practical small cruiser that quietly continues to serve its owners well. In the British second‑hand market today, the Mirage 29’s story is still being written one tidal creek at a time, by sailors who value the ability to stand upright on the mud more than they crave line‑honours on the racecourse.