Vosper & Company, often referred to simply as Vospers, was a British shipbuilding company based in Portsmouth, England.
Vosper motor torpedo boat in Romanian service, possibly Viscolul
F43 Liberal VT Mk10 ‘Niteroi’ class fitting out at Vosper Thornycroft, Woolston
A motor torpedo boat is a fast torpedo boat, especially of the mid 20th century. The motor in the designation originally referred to their use of petrol engines, typically marinised aircraft engines or their derivatives, which distinguished them from other naval craft of the era, including other torpedo boats, that used steam turbines or reciprocating steam engines. Later, diesel-powered torpedo boats appeared, in turn or retroactively referred to as "motor torpedo boats" for their internal combustion engines, as distinct from steam powered reciprocating or turbine propulsion.
Israeli MTB formation, c. 1967
MTBs in the Mediterranean, February 1945
MTB-460 of the Royal Canadian Navy