sentences:  In the belief that the Luftwaffe would have very few men with circus experience, limited production of the Lagonda naval flamethrower began, with weapons being installed onto coasters working in and around the River Thames.The flamethrowers were welcomed by captains at first, until they discovered that the weapon required a very high level of maintenance and expert handling if the weapon was to have sufficient fuel-pressure to be effective, and the crew wished to avoid being coated in tar.While the installed flamethrowers did not produce a single confirmed enemy casualty before the end of the war, information gathered by the British Secret Intelligence Service suggested that the weapons had two noticeable effects upon the German armed forces.