Question on British Naval Markings

[Weasel]

Can anybody tell me what the line indicated by the arrow in the attached picture denotes, i was sure i had seen the answer on here but cannot seem to find it now, Best regards Weasel.

 

[pzgr40]

COG? (Centre OF Gravity)
Just a guess.....

Regards, DJH

 

[Alpini]

For sure I think. Heavy german shells had the same marking (white line).

 

[Richard709]

Extract from BR

 

[pzgr40]

I think it's the place wher the clamp (what's the english name for that thing) at 00.23 seconds had to be placed.

https://www.youtube.com/watch?v=iuO4BfnlDY8

Too far forward and the shell might slip out of the clamp. too far backward and it may slip backward and damage the driving band.

Regards, DJH

 

[jvollenberg]

Looking at B.R. 932 (1945) plate 8. There is a MK XXII 15-inch round with BNT after the XXII. What does the BNT stand for? I know the 15" is the gun size. The XXII is the MARK of the round, but what is BNT?

Joe

 

[TimG]

Joe,

The "B" denotes the projectile has a C.R.H. of between 4 and 6.
The "N.T." denotes the projectile is fitted with a tracer element.

TimG

 

[jvollenberg]

Tim,

I feel really dumb asking but what is C.R.H?

Joe

 

[TimG]

Joe,

Apologies, should have explained that.

C.R.H. - Calibre Radius Head.

TimG

 

[Weasel]

Thank you very much for the answers and all the added info, Best regards Weasel.