Distinguishing naval-shell rear tapers from boat tails

Did any Second World War naval shells use boat tails?

No clear example is identified: the slight taper on the 16-inch projectile is judged insufficient, and possible smaller-calibre examples remain uncertain.

The examples considered do not establish a clear rifle-bullet-style boat tail on a Second World War naval shell. A 16-inch/50 projectile has a slight rear taper, but the participants do not regard it as enough to qualify. The swelling around the driving band and narrowing behind it are associated with rifling and gas pressure. Possible smaller-calibre examples remain uncertain because the remembered gun cannot be identified.