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Keywords from Image Description:
submarine boat dry dock drydock graving dock gravingdock warship german navy germannavy kaiserliche marine kaiserlichemarine sm ub smub ub ub unterseeboot uboat uboat typeub typeub ubclass ubclass typeub ii typeubii ub iiclass ubiiclass ship french navy frenchnavy marine nationale marinenationale roland morillot rolandmorillot captured