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Arcturus Class, U.S. Cargo Ships


Photograph of USS Electra, an Arcturus-class cargo ship

U.S. Navy

Schematic diagram of Arcturus class cargo ship

ONI 222


Specifications:


Tonnage

7480 tons light displacement
14,225 tons fully loaded

Dimensions

459' 1" by 63' by 25'9"
139.93m by 19.2m by 7.85m

Maximum speed      

16.5 knots

Complement

267

Armament

1 5"/51 gun
4 3"/50 AA guns
8 20mm Oerlikon AA guns
Machinery
1-shaft Sun Nordberg diesel (6000 shp)
Bunkerage
1250 tons diesel fuel

Cargo

4410 deadweight tons
336,254 cubic feet (9522 m3)
Modifications
Most units eventually landed the 3" guns to make room for 4x2 40mm Bofors AA guns and 18 20mm guns.

Machinery varied somewhat, with some units having slightly different diesel machinery and later units having geared turbine machinery, a slightly lower speed (15.5 knots) and bunkeratge of 1630 tons fuel oil.


The Arcturuses were Maritime Commission standard C2-S-AJ3 vessels converted for use as Navy cargo ships. The first two units were acquired in 1939 and were among the most modern cargo ships operated by Navy crews when war broke out. Additional units were acquired in 1942. Originally designated as cargo ships, they were later redesignated as attack cargo ships, and equipped with 8 LCM(3) and 12 LCVP, Winn davits, and two quadrupod masts supporting 30- and 10-ton booms.


Units in the Pacific:

Procyon

Mare Island

Betelgeuse      

arrived 1942-4-16
Bellatrix
arrived 1942-4-18

Electra

arrived 1942-5-17

Alchiba

arrived 1942-6

Alcyone

arrived 1942-6
withdrawn 1942-9
arrived 1943-9-43

Libra

arrived 1942-6-17
Mercury
arrived 1942-7
Not technically an Arcturus, but a one-off C2 conversion with approximately the same characteristics.

Algorab

arrived 1942-12

Titania

arrived 1942-12-25     

Oberon

arrived 1943-1

Starr

arrived 1944-12
Arcturus
arrived 1945-1-9


References

DANFS

Friedman (2002)

NavSource.org (accessed 2007-4-27)



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