Portland class HEAVY CRUISERS
 
USN Heavy Cruiser CA-33 "Portland"
Displacement: 11,574 t (9,800 t Std)Machinery:8 boilers, 4 shafts  Main Guns: 3×3×8 in (203 mm)/55 Main Belt: 5-3 in 127-76 mm
Max Length: 610 ft 3 in 186.0 mMax Power: 107,000 hp 78 698 kW DP Guns: 8×1×5 in (127 mm)/25 Decks: 4-2 in 102-51 mm
Beam: 66 ft 1 in 20.1 mMax Speed: 33 kts 61.12 km/h AA Guns: 4×4×1.1 in (28 mm)* Barbettes: 1.5 in 38 mm
Draght: 17 ft 1 in 5.21 mRange: 8,640 nm 16 000 km AA Guns: 15×1×.79 in (20 mm)* Turrets: 2.5-.75 in 63.5-19 mm
Complement: 876 officers and enlisted Bunkerage: 2,125 t fuel oil Aircraft: 4 × SOC-1 Seagull CTower: 1.5 in 38 mm

  * Antiaircraft armament as during the Battle of Midway (June 1942).

Even before the comissioning of six Northampton class cruisers U.S. Navy ordered five more heavy cruisers of almost same design. The ships were laid down in 1930-1931, but follow-on class of cruisers (CA-37 Tuscaloosa) exhibited such superior characteristics, that an attempt was made to reorder all five ships under construction to its specifications. However, two cruisers the CA-33 Portland and the CA-35 Indianapolis had been awarded to private builders and contract changes would be far too expensive, thus the Portland class was relegated to just two cruisers. The remaining three ships were all at Navy yards and could be modified without great expense, they became the part of the follow-on New Orleans class.

The ships were built to a modified design with a modified superstructure and minor improvements. Both ships were fitted out as flagships, providing enough room for an admiral and his staff. The cruisers, like their Northampton class predecessors, used three triple-turret layout for their 8 in (203 mm) guns, but originally mounted twice as many 5 in (127 mm) dual purpose guns (8 vs 4), and were somewhat heavier. The Portland class also was the first US cruisers built without torpedo tubes due to war gaming results from the Naval War College which indicated that the torpedoes were unlikely to be fired from a cruiser, and more a liability than an asset.

One Portland class heavy cruiser (CA-33 Portland) took part in the Battle of Midway as a part of Task Force 17 Cruiser Group (Task Group 17.2).

 

Ship Builder Laid Down    Launched    Commisioned    Fate
 CA-33 Portland Bethlehem Steel. Quincy, MA 17 Feb 1930   21 May 1932   23 Feb 1933   Sold for scrap   6 Oct 1959
 CA-35 Indianapolis New York Shipbuilding Corp., NJ 31 Mar 1930     7 Nov 1931   15 Nov 1932   Sunk in action 30 Jul 1945