Mars
top, crow's nest, masthead platform
top, top spot, chart
top, tank top
stomp, tramp, patter
top performer, star, ace
masthead, top of the mast
tabletop, worktop, countertop
Марсовый матрос наблюдал за горизонтом с мачты
The masthead sailor watched the horizon from the mast.
На корабле были марсовые площадки для наблюдения
The ship had masthead platforms for observation.