[Lucien]

Thinking twice, I came up with a tentative explanation.

The Stringbag had a crew of three and was a float plane. As far as I know, it seems impossible for two crewmen, the pilot remaining at the controls, to haul the bodies aboard, in the fuselage I mean.

Thus it leaves a possibility, after the identity of the deads were established via their identity discs or other, the bodies were simply returned to the sea.

Blaize and his crew were sailors as the Stringbag crew probably also was... and at the time, that the way matelots were buried when their death occured at sea...