The Tiger 25 is a British trailerable sailboat that was designed by John A. Butler as a cruiser and first built in 1969.
[1][3] The design was built by Westerly Marine Construction in the United Kingdom between 1969 and 1976, with 284 boats completed.
It has a masthead sloop rig, a spooned raked stem, a plumb transom, an internally mounted spade-type rudder controlled by a wheel and a fixed square fin keel.
[1][3] The boat is fitted with a Swedish Volvo MD1B diesel engine of 10 hp (7 kW) for docking and manoeuvring.
[3] The boat is supported by an active class club that organizes sailing events, the Westerly Owners Association.