I started this project in September 03 and launch was May 05. Houseboat specifications Pontoons Steel Hexagon 600mm / 24" sides Plate 3mm / 1/8" Lenght12m / 40' Overall size deck width 6.7m / 22' deck length 15m / 50' Dwelling 6 berth 2 bedroom Kitchen/living/helm Bathroom (shower/ toilet/ handbasin) Steel framed Clad fibre cement sheets outside Gyprock sheet inside 5.4m x 8m / 17'x 26' rev/cycle air con 1.5 HP split system Roof polystyrene sandwich board (coolroom material) Sewer storage 2 x 300mm x 7.5m /12" x 24' storm water PVC pipe Capacity of approx 530lts/140US gal each Batteries 2x Exide 6volt @ 1080 amp ea () Inverter/Charger Xantrax PS 2200w Power 240 volt throughout 8 outlets 10x18 watt quadphosphor tubes Hot water Rinnai Infinity 16lts Motor Yamaha 60HP 4stroke high thrust outboard 180lt fuel tank/47US gal