Paul Citroen at the "Zeehond"

The photo below pictures Dutch painters Paul Citroen (with beret) and Carel Willink, posing in front of the Dutch Navy submarine "Zeehond" (Seal) while visiting it's home port Den Helder.

The "Zeehond" was a Dolphin class, 69 crew sub, launched in 1960 and decommissioned in 1990. As no one bid for it while on auction, it was eventually scrapped in 1997.