Here I've popped a stretch of extruded (not expanded) polystyrene insulation in the 'picture-frames' that'll form the deck of the catamaran: together they displace over sixteen kilos or thirty-five pounds.
We're moving away from the fixed volume of 'vessels' here that has held sway since the first dug-out canoes, offering the punters a choice of thicknesses of foam resulting in a variety of displacements.
To fix them in place I ran a bead of silicone round the margins, and spray-glued the remainder. As this is 25mm foam within a 20mm base, too, later we shall run a filet of silicone around the margins topside too in order to neaten things up, and to prevent scuffing.
Recticel ~ which sounds like a colonic complaint ~ is a firm in Belgium which started out in 1778 by making gunpowder. Turning to peaceful pursuits like lining walls and floors, they'll probably be annoyed at me using the product in maritime drones.
I've also fixed a temporary spar at the far end in order to keep things aligned.
