IXD2 makes for good practice for a Gato?
 

Displacement: (tons)
IXD2: 1616 (sf) 1804 (sm)
Gato: 1825 (sf) 2410(sm)

Length: (m)
IXD2: 87.60
Gato: 95

Beam: (m)
IXD2: 7.5
Gato: 8.2

draft: (m)
IXD2: 5.4
Gato: 4.6


Power: (hp)
2 X 4400 (sf) 2 X 1000 (sm)
4 x 6500 hp (sf) 4 x 2740 hp (sm)

Speed: (knots)
IXD2: 19.2 (sf) 6.9 (sm)
Gato: 20.75 (sf) 8.75 (sm)

Range: (KM)
IXD2: 23700/12 (sf) 57/4 (sm)
Gato: 21,900/10 (sf) ??/4 (sm)

Torpedoes:
24 total - Tubes: 4 bow / 2 stern
24 total - Tubes: 6 bow / 4 stern

Crew:
IXD2: 55-63 men
Gato: 65-74 men

Max depth:
ca. 230 m (755 feet)
Ca. 90 m (300 ft) - yard rating, could go deeper

Yup, plus the ASW the tyep IXD2 might face will make the Gatto's task seem really easy. :yep:

How about a "I do not know" option ? :D

In my excited zeal about the idea, i totally forgot about that. :rotfl: