The Soviet submarine landing craft have gotten me thinking about horrible but possible warship ideas, here are some I have from different era's.
Age of sail
An enlarged 32 gun frigate with an all 32 pounder armament, I would call it a 32 double. Thing would need to be incredibly strong built and cost almost as much as a third rate, but as a trade off could probably fight any two other frigates of the period with a decent change of success.
Ironclad era
Basically any crazy idea I have had has some real world example, but a giant floating slab of armor with a massive ram bow is always fun.
Steel battleship era
Again lots of absurd designs already built but I like the Duilio class of the Regia Marina.
Predreadnought era
Massive slab of armor with stupid number of 6in secondaries and high speed?
Dreadnought era
Thickly armored high speed with with only light guns on deck but solid line of torpedo tubes running most of the length of the hull. Charge the enemy battleline shrugging off any fire coming your way, turn, and unleash hell.
Age of sail
An enlarged 32 gun frigate with an all 32 pounder armament, I would call it a 32 double. Thing would need to be incredibly strong built and cost almost as much as a third rate, but as a trade off could probably fight any two other frigates of the period with a decent change of success.
Ironclad era
Basically any crazy idea I have had has some real world example, but a giant floating slab of armor with a massive ram bow is always fun.
Steel battleship era
Again lots of absurd designs already built but I like the Duilio class of the Regia Marina.
Predreadnought era
Massive slab of armor with stupid number of 6in secondaries and high speed?
Dreadnought era
Thickly armored high speed with with only light guns on deck but solid line of torpedo tubes running most of the length of the hull. Charge the enemy battleline shrugging off any fire coming your way, turn, and unleash hell.