That clear mental picture you must have continually in mind, as he sailor has in mind the port toward which he is sailing the ship; you must keep your face toward it all the time.
After more than six years of underwater survey and exploration, archaeologists confirmed Yangtze River Estuary No.2 as a wooden sailing ship from the reign of the Tongzhi Emperor (1862-1874) of the Qing Dynasty.
And yes, your classic stories of humans intervening in nature and causing disasters, like bringing rodents to islands, that stowed away on colonial sailing ships.