here I go again making my tuna even lighter I have just removed the floor in the cabin between the bunks it was pretend teak decking rotting and full of water the same goes for the support beams under the floor of which there were 4 each measuring about an 1" square these had been fibreglassed into position are they structual or just their to support the floor as my new floor is a new lightweight product and will only need two supports In case any of you ever come to Sydney look me up I'll take you out for a sail