Built by Hydromax Multihulls, Gloucester NSW The 4 X 4 of the Sea Hydrofield Trihulls have long been regarded as excellent sea-boats. It is no coincidence that the boats are chosen time after time by commercial operators - including the Australian Navy, and various rescue groups. Hydrofields are also popular with recreational fishermen - people who can appreciate the handling, ride and performance benefits of these craft.... Use the buttons on the left to see more of our craft and read our story.