All military submarines are generally seen by the casual observer as being geared toward attack. “Attack submarines” are ...

They can operate in heavy seas and winds of 45 knots, but for other than heavy-weather training, the Navy limits its use to somewhat milder sea conditions (wind speed is less than 34 knots).

Two US military vessels supporting the pier ran aground amid heavy seas last week ... over the next two days with the help of the Israeli navy. The repairs will take more than a week, she added.