Some of the "overlooked" boats of WWII would be the PT Boat Tenders. Two of these were AGP-8 and AGP-9 which were converted from seaplane tenders. Here are photos and diagrams of these two ships. (click thumbnails for larger views)
AGP-8 USS Wachapreague
Oyster Bay class Motor Torpedo Boat Tender:
Displacement: 2,400 tons (full load)
Length: 311'
Beam: 41'
Draft: 14'
Speed: 18 knots (max); 13.5 knots (econ)
Armament: 2 5"/38 DP; 4x2 40mm; 8 20mm; 2 DC tracks
Complement: 246
Diesel engines, twin screws;
Built at Lake Washington Shipyards, Houghton, Wash.,
Commissioned 17 May 1944
AGP-9 USS Willoughby
Oyster Bay class Motor Torpedo Boat Tender:
Displacement: 2,400 tons (full load)
Length: 311'
Beam: 41'
Draft: 14'
Speed: 18 knots (max); 13.5 knots (econ)
Armament: 2 5"/38 DP; 4x2 40mm; 8 20mm; 2 depth charge tracks tracks
Complement: 340
Diesel engines, twin screws, 6,000 shaft hp
Built at Lake Washington Shipyards, Houghton, Wash.
Commissioned 18 June 1944
(above courtesy of HyperWar)
Here are the camo pattern sheets for measure 32/2Ax this measure was used by AGP-8 and AGP-9. (click thumbnails for larger view)