Atlantic Angel Shark

Angel Shark

Squatina dumerili

Size: to 5 ft

Habitat: shallow coastal waters to extreme depths

Notes:
Angel Sharks are ambush predators, much like Goosefish. They are generally passive creatures but can bite viciously if provoked. They seem to be intermediate between sharks and rays, and are actually more closely related to Spiny Dogfish than anything else, despite appearances.

Angel Shark
Angel Shark

steam-powered winch
A steam-powered winch on a schooner barge. Note the various drums for drawing up anchor chain, towing hawsers, etc, and the anchor chains themselves going down through the deck into the chain locker below.

Prior to steam power, the only force available on a sailing ship to perform all the necessary work was the men on board. For some tasks, such as raising the anchor, it might be necessary to yoke the entire crew to a multi-deck manual capstan. On the largest vessels, even with every available man, this might take several hours to complete. With the advent of steam power, a "donkey engine" and a single engineer could do the work of many men, in less time, and these were soon installed in almost all vessels.

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