Anonymous User Wrote:
> My question is how were they numbered in U-boats
> (including the aft ones)? From the photos it
> looks as if they were numbered Starboard (odd) to
> Port (even) with the higher numbers uppermost.

That's right.

> Where the aft tubes known as 5 and 6 or Aft 1 and
> Aft 2?

They were known as 5 (stb) and 6 (port).

> On the XXI's I pressume the tubes were in 3 banks
> of two?

Yes, three rows, in each two tubes, numbered as above.

--
Regards
Maciek