Sinclair C5 with Sinclair claiming that he had found "very big" levels of interest. Hoover were sufficiently persuaded to allow Sinclair to divert 10 of their employees to modify C5s for overseas export. The bid to sell the C5 abroad failed; the Dutch National Transport Service told Sinclair that the C5 was not suitable for Dutch roads without improvements to its braking system, the addition of more reflectors, and the inclusion of the High-Vis Mast as part of the basic package. Most of the other ten countries that Sinclair inquired of demanded similar changes. The C5's reputation received a further battering when
F B swamp vehicle rubber floats attached to the track links in order to prevent the vehicle from sinking into the quagmire. The F B could also be used to transport men across water ways, powered by a drive propeller shaft. The S B swamp vehicle was the first prototype design built by the IJA for use as a military transport/personnel carrier for crossing swampy terrain and water ways. It was also designed to transport men across water ways, powered by a drive propeller shaft. Built in 1933, like the subsequent F B vehicle it had rubber floats attached to its track links to