under hatches

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under the hatches

Under the deck of a boat. In modern usage, it most commonly refers to the engine of a powerboat. Their new model boasts a 9-liter engine under the hatches capable of producing 860 horsepower at 6800 RPM.
See also: hatch
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

under (the) hatches

1 below deck in a ship. 2 concealed from public knowledge.
See also: hatch
Farlex Partner Idioms Dictionary © Farlex 2017
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