Sorry no.1, but it must be Das Boot!
CM#IV is one of the machines built during the war by Aviolanda at Papendrecht, the Netherlands. It was operated by KFlGr.3/106 based at Schellingwoude near Amsterdam. Plane was damaged on 23 Aug 1943 and finally sunk during a rescue operation of two Britisch pilots, but not before crew was picked up by two other Do-24's and a 'Schnellboot'.
(Reference: 'Dornier Do-24' by Pieter van Wijngaarden and Prudent Staal;1992 Bonneville Publishers-Bergen, the Netherlands.).