User:Jareel_Skaj/Navy Shells

This page is showing the list of the key calibres in inches into a common units and related penetration of some of the naval shells in roughly the same calibre. This table is meant to give you a rough idea of how much protection does the ship armor give at a typical combat ranges. Going by inches as a base puts some nations in a disadvantage in terms of a number of entries in the table (notably Germans).

AP

Note: A number of guns (notably Japanese) use SAP instead of AP ammunition for the same purpose. 30° @ 5000m was selected to illustrate real ranges and hit angles. While not universal (e.g. ≥12" guns rarely shoot at targets so close) it should give you a rough idea about the performance for the shells boiled down to a single number.

inch	mm official	mm SI calculated	Penetration @ 30° @ 5000m	TNT equivalent (kg)
3	76	76.2	30mm 37mm	0.06kg 0.13kg
4	102	101.6	–	–
5	127	127	93mm 86mm	0.77kg 1.30kg
6	152	152.4	100mm 177mm	0.80kg 1.88kg
8	203	203.2	214mm 247mm	1.62kg 3.16kg
12	305	304.8	275mm 419mm	5.66kg 18.79kg
14	356	355.6	415mm 420mm	11.11kg 12.21kg
15	381	381	390mm 416mm	20.68kg 25kg