Plate aluminium boat builders - manufacturing aluminium longboats for dive boats, commercial fishing boats, recreational family boats, our range 5.8 metres, 6.1 metres, 6.5 metres, 7.1 metres, 9.2 metres. tiller steer hulls and centre console designs.. Build your own boat or have us build it for you. you can save around 50% of a typical boat cost by building it yourself. working with australia's best naval architects we supply aluminium boat kits or assembled boats from 5-25m.. List of plate ally builders i have compiled a list of plate aluminium boat builders available in australia. i think these are pretty much all of the builders that have an internet presence..