3 adverbs to describe how to submarine

She is a sister ship of the Antinous, and was in with damage to her forefoot, which had been ripped up when she ran down that big German submarine north of the OrkneysYes, I know; she was due to go out some time to-day.

There, before they separated for a long leave, which was sure to be followed by honorable discharge, five of them agreed to pool their share of the prize money to charter a craft, preferably a submarine, and go in search of the treasure city of Siberia.

deep, deep seated; profound, sunk, buried; submerged &c 310; subaqueous, submarine, subterranean, subterraneous, subterrene^; underground.

3 adverbs to describe how to  submarine  - Adverbs for  submarine