Seamaster 25

Seamaster 25 Cadet Mk 2 & Seamaster 25 Admiral

The Seamaster 25 was designed for river, estuary and inshore use,
but not for rough sea work or winds greater than force 5 to 6.

The Seamaster 25 Cadet Mk 2 represented an updated Seamaster 24 and was introduced in 1963.


Length 24'8"; Beam 9'2", Draft 2' Air draught 5'10" Weight 2 tonnes.

The Admiral was introduced with significant re-design of the engine arrangement. It was manufactured between 1964 and 1967. It had the following specification:
Length 24'8"; Beam 9'2", Draft 1'8" Air draught 5'10" Weight 2¼ tonnes.

Engine options:

Both models were mostly supplied with Wortham Blake / Ford 1.2 litre or 1.5 litre petrol engines to maintain a flat cockpit sole. Deisel engines were supplied to order but necessitated a raised engine box in the cockpit.

It can be difficult to tell these two models apart. The basic differences are that the Cadet Mk 2 normally had twin bilge keels whilst the Admiral also had a centre keel and a stern tunnel.

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