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The stamp gives CAPE HORNIER but not any sailing ship exist under that name, so it must be a sailing ship what had passed the most southerly point of South America, notorious for the stormy weather. The cape is named after the Dutch town Hoorn, (Cape Horn) by the Dutch explorers Schouten and Le Maire. See: https://en.wikipedia.org/wiki/Cape_Horn and on stamps: http://www.shipsonstamps.org/Topics/html/kaphoorn.htm

Cook Island 1979 35c sg637, 1980 sg691.
Penrhyn Island 1981 10c sg184, $1 sg204, 1983 18c + 10c sg301, 1984 96c sg351. (http://www.shipstamps.co.uk/forum/viewt ... ier#p10487 )