A British-American submarine for the South China Sea

Which British T-class and American Gato-class features would make the best submarine for the South China Sea in 1942?

Use British torpedoes and batteries with American diesels, while balancing the Gato's size against the T-class boat's other advantages.

The proposed hybrid combines British torpedoes and a ten-torpedo salvo with T-class batteries and American diesel machinery. The larger Gato hull is attractive for Pacific operations, although the choice of diesel installation still matters. A suggestion to use American accommodation is challenged because interwar British bedding is judged more comfortable and the difference in space per sailor is considered small. The later discussion accepts losing stern tubes and favors a 4-inch deck gun because more ammunition fits into the same space than with a 5-inch weapon. Air conditioning offers useful cooling, particularly in the Pacific, but adds machinery that can fail and primarily protects equipment. These submarines also spend much of their time surfaced, allowing ventilation through open hatches.