Auckland Boat fuel tanks, Marine Tanks Auckland custom built and made to measure. Marine Diesel tanks, Marine petrol tanks, Marine water tanks,Marine grey water tanks, Marine black water tanks, custom built to fit the space you need to fit. Any shape, any size boat tanks and marine tanks locally hand built in Auckland. 8mm through to 15mm HMWPE sheet fabricated, tri seam extrusion welded and tested. Tanks made to fit. Auckland based marine tanks and fuel tanks, locally built in West Auckland.