Not looking as weird, but still a weird concept for that time:
Training cruiser Deutschland (A59), built between 1959-1963. With slightly less than 5.700 ts displacement, she was one of the largest (Western) German units of the Cold War, but offered almost no offensive or defensive armament worth mentioning, except for four 100 mm guns and some ASW mortars, torpedos, depth charges and mine rails. Sonar was rather anemic with not upgrades after commissioning, speed was abysmal, topping at 21 kn (cruising at 12 kn to 16 kn at the most) and air-defence was out-dated already when she was launched: while the 100 mm guns were dual-purpose and aided by two twin 40 mm and two single 40 mm, no missile systems or CIWS were added during her career.
In fact, Deutschland was never overhauled properly and in 1989 she was marked for decommissioning the following year and subsequent scrapping. She was demilitarised from 1990 onwards and scrapped at Alang in 1993.
A weird, yet interesting ship.