Varnished the submarine with Modelmaster Semi-gloss Lacquer (plus a couple of drops of Testor's Dullcoat), diluted with Tamiya Lacquer Thinner.
Gave the sea a coat of Pledge.
Painted the frame with Vallejo German Uniform and gave it a wash with raw sienna oil paints diluted with Mig Productions Thinner for Washes. Wiped off the excess oil paint with tissue paper.
All that is left is to paint the Hellcats .