The Building of the Havengore, 1956

In 1954 the Port of London Authority (PLA) issued tenders to reputable boat builders. The existing survey vessel, an ex-Second World War Admiralty boat, the Harbour Defense Motor Launch (H.D.M.L.) Shorne Mead was to be replaced.The new vessel must accommodate a large crew as well as facilities for chart-making equipment. The Shorne Mead achieved 12 knots and so should the replacement.

A Thames-based family boat company was successful. Located in Teddington, Tough Bros. have been connected with the River Thames since the 1820s and were established as one of the most respected and successful yards. In 1951 Tough Bros. had completed PLA survey vessel Thame, a single skin teak vessel and in the years prior to 1954 had carried out repair work on the PLA fleet. Toughs also had to submit the lowest quote to secure the tender.

Considering the experience of the yard it is no surprise Havengore was designed and built there and to such standards. Achieving the required speed proved the biggest challenge. Shorne Mead was a much smaller and lighter boat. Considering the design of the new vessel, including a rounded stern and weight concerns, a double skin teak hull, diagonal construction, with a total thickness of 11/8 on an English oak frame was appropriate.

For three months Tough Bros. designed and built models. The National Physical Laboratory, also based in Teddington, was asked to carry out tank trials, to design the propeller and supervise the underwater fittings. A model of a boat which would do over 12 knots was established. By the end of 1954 work commenced on Havengore. It has been customary of the PLA to name their craft after landmarks, tributaries of the Thames or distinguished persons who have held office on their Board. Havengore is a tributary of the River Thames.

As specified, Havengore is powered by twin Gardner diesel engines, giving a service speed of 12 knots. The engines sitting proudly in a spacious well-appointed engine-room are a feature of the vessel. The PLA's insistence on this motor was well found. The Gardner family started business in Manchester in 1868 determined to produce first class engines. Attention to detail, stringent quality control and a positive working environment produced an engine with every working component produced 'in house' and a reputation for reliability, durability and economy. The Gardner motor is still considered by many the best available.