You are ordered to walk ten feet forward and cross a gang plank, and then on to the ship.
你被命令向前走十英尺并穿过一块木板, 然后上船。
英语百科
Plank (wood)
(重定向自Gang plank)
A plank is timber that is flat, elongated, and rectangular with parallel faces that are higher and longer than wide. Used primarily in carpentry, planks are critical in the construction of ships, houses, bridges, and many other structures. Planks also serve as supports to form shelves and tables.