The design was broad, shallow-draught, and exceptionally low in freeboard, making it useful in sheltered and shallow waters but hazardous offshore. Water could work through openings that were not vulnerable to direct gunfire, while unreliable early steam machinery added another risk at sea. John Ericsson's concern for Swedish defence helps explain why the monitor type suited Sweden's sheltered waters. The ship's two 11-inch Dahlgren guns, eight-inch turret armour, small waterline belt, and nine-inch pilot-house protection show how much protection was concentrated in a tiny exposed profile. Its six-knot speed and single shaft further underline that this was a specialised coastal fighting ship rather than a general-purpose ocean cruiser.
Notable Point · 5:11-8:14
A turret ship built for sheltered water
Monitor traded seakeeping for a shallow, low target with a heavily armoured turret and pilot house.