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Military


DDG-31 Decatur
EDDG-31 Self Defense Test Ship (SDTS)

Specifications
Length(O/A) 418.5'
Length(W/L)
Beam 45.2'
Draft 20-22'
Displacement4,050 tons Full Load
2,850 tons Standard
Boilers 4 Foster Wheeler 1,200 psi (DD-936)
4 Babcock & Wilcox 1,200 psi (others)
Turbines 2 Westinghouse geared steam (DD-932)
2 General Electric geared steam (others)
Horsepower 70,000 shp
Shafts 2
Endurance 4,500 NM @ 20kts
Max Speed 32.5-33 knts
Main Battery 3 x 5"/54 (Mk 42) DP
1 single mount forward,
2 single mounts aft
[aft mounts removed in DDG conversions]
AAW 4 x 3"/50 cal in two twin mounts
(reduced to 2 then removed from all by 1975)
4 x .50 cal HMG
SAM 1 x Mk13 single launcher w/40 Tartar (RIM-24) missiles aft
ASW 1x Mk 16 8 tube ASROC launcher amidships
Depth Charges 2 x Hedgehog launchers replaced later by
Mk32 torpedo launchers
Torpedoes 4 x Mk 25 fixed torpedo tubes w/ Mk 32 torps replaced by
6 x 324mm torpedoes in 2 triple Mk 32 launchers
Systems
  • SPS 40B/D Air Search Radar
  • SPS 10F/D Surface Search Radar
  • SPS-52C Surface Search Radar
  • 1 x Mk 13 weapon director
  • 1 x Mk 86 w/SPG 60D & SPQ 9A
  • 2 x Mk 74 missile fire control
  • Mk 114 antisubmarine fire control
  • GE/Hughes SQQ 23 PAIR keel mount Sonars
  • SLQ-25 Nixie towed torpedo decoy


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