lollop

Every available spyglass was directed towards this strange sail. It appeared, as we all watched it, to lollop up and down, as it were, with the jerk of the sea, according to no regular motion of a ship or boat.

Here’s fine discipline on-board, when such lazy, skulking sons of bitches as you are allowed, on pretence of sickness, to lollop at your ease, while your betters are kept to hard duty!