Some of Avon's white water rafts go up to 18ft but I have seen boats FAR bigger than that in their factory - only a fraction of their stuff ends up on the website.
I remember seeing one soft bottom inflatable that was about 50' long!!! Also the early camel trophy boats were big enough to carry a 3 ton Land rover!!!
I've seen a few Zodiac MK IV HDs which are 17'6". The Mark VIs are +23 feet and have a maximum payload of 4100 Kg (9040 lbs). Here are pictures of a Mark VI and a Mark V.
Avon make some large SIBS for commercial purposes and the military. I think they go up to 5.2M.
See their site:Avon Workboats
Alex
YUP! we have one in our diving club its an Avon CRRC5.2, not very good as a dive boat beacause of the flexable floor. with all the weight of diveing gear air gets trapped under the floor then as it comes out the back it cavitates like mad.
