Kamm was commissioned to develop and manufacture the composite structures for the Gibbs Humdinga, an amphibious vehicle built around a 6.7-metre carbon-fibre hull. Inheriting tooling originally intended for prototype manufacture, the programme presented significant challenges involving thermal expansion, complex laminate construction and dimensional stability. Kamm developed new manufacturing processes, cure sequences and tooling solutions to overcome these limitations. A subsequent production phase introduced an innovative vacuum-infused carbon-fibre tooling system, avoiding the need for conventional tooling manufacture while improving repeatability and reducing costs. Through these developments, Kamm reduced the production time for a vehicle set from 16 weeks to just 2.5 weeks, with an estimated £1 million saving in tooling costs. The experience subsequently supported the manufacture of a 10.5-metre composite hull for the Gibbs Phibian.