IJN Asashio DDE refit in early 50s
With the start of the cold war in late 1940s the IJN naturally felt it needed new ships to deal with the emerging threat of fast Soviet submarines developed from the captured KM Uboats gained at the end of WWII just prior to the armies meeting on the Oder.
The diet was naturally somewhat dismissive of so much spending just after the war and therefore the IJN had to look to its relatively new and numerous but now obsolescent DD classes to fill its fast escort needs.
The 10 Asashio class only completed in 37-39 so had hulls and engines only 10 years old but the old 5" guns through officially designed as DP now where obviously too slow and infective against new fast aircraft threats emerging so offered ideal hulls for conversions. With the cooperation continuing from the war of the other big three treaty navel powers they started work on proposal's for frigate conversions. Twin 10cm mounts where reused from spares freed up from modifications to compensate for increased ASW and Radars top weight to later DD classes.
The result the Asashio DDEs completed conversion between 52-55 and served mostly into the early 70s
Asashio DDE specifications as converted:
Displacement: 2,700t
Propulsion: 2-shaft geared turbine, 3 boilers, 50,000 shp (37,285 kW)
Speed: 32 knots (40 mph; 65 km/h)
Range: 6,400 nmi (10,600 km) at 15 kn (28 km/h)
Complement: 192
Armament:
2 × 10 cm/65 (3.9") Type 98 (1 x 2)
6 x 40mm Type 1 AA gun (3x2)
5 × Type 96 AA guns (5 x 1)
4 × 21 in fixed torpedo tubes (2 × 2) with 12 × Type 12 torpedoes
2 x ASM Mortar Type 15 (limbo MK10) (some early ships revived Type 4 mortars as standbys until mid/late 50s)
Towed decoy system fitted in stern
Radar, Electrical and ASDIC systems where a mixture of home grown and mostly RN due to the cost of US systems being to expensive for the IJN budget for secondary craft and the availability of outstanding semi blocked sterling balances from the war.
Thanks to BB1987 for the hull and Rainmaker for inspiration.