O 2 class submarine

The O 2 class was a class of four submarines, built by Koninklijke Maatschappij De Schelde in Flushing for the Royal Netherlands Navy. Used for patrols in the Dutch home waters. The class comprised O 2, O 3, O 4 and O 5. The submarines diving depth was 25 metres, during trials with no crew on board a depth of 40 metres was reached.