Cuba Post issued in 1992 four stamps for tourism, all this stamps shows some watercraft.

10c Depict a wind surfboard see viewtopic.php?f=2&t=11030&p=11712&hilit=windsurfing#p11712
20c Depict a pedalo, see viewtopic.php?f=2&t=11030&p=11712&hilit=windsurfing#p11712
30c depict according Watercraft Philately and the Stanley Gibbons catalogue a replica of a “caravel” (redonda) entering the port of Havana, the stamp is not so clear but she is square rigged on fore and main mast see: viewtopic.php?f=2&t=10014&p=11903&hilit=caravel+redonda#p11903
50c Show a wind surfboard see viewtopic.php?f=2&t=11030&p=11712&hilit=windsurfing#p11712

Cuba 1992 10/50c sg3738/41, scott 3432/35.