My diorama was on a matted glass plate (from the local glass store - used on front doors in many homes) measured 98 x 54 cm with a blue plastic bag underneath the glass just curled, to illustrate waves on the water and make some relief structure to the water -If I want to change the color of the water, I just change the plastic underneath
The background is of light blue and white carton paper I also used a mirror for background to catch the sky behind the ship. Light was the scale 1:1 sun as only light source.
The photos was taken with my Panasonic FZ5 5MP digital camera, at macro-mode with center-weight light measures, at 3 f-stops down.