Submarines can rest on the seabed but lose mobility

Are submarines ever deliberately rested on the seabed?

Yes, although submarines generally prefer not to because a boat on the bottom cannot move freely and may have trouble getting underway again.

Submarines sometimes rest deliberately on the seabed, although they generally prefer not to. A boat on the bottom gives up immediate freedom to manoeuvre. It may also face difficulty getting underway again. The practice is possible without being an attractive routine operating method.