Calling hydrophone and / or anti-submarine experts!

[Archer]

Dear Forumites

A friend and I have been puzzling over this problem, and we think we have the answer, but we want to test it out on the Forum.

Attached is an extract from an R.N.V.R. record (forget whose, just now).

• The individual underwent training at H.M.S. Sarepta in BT Hydrophones.
• He was going to be appointed to H.M.S. Egmont for one of the first two BT Stations in the Otranto Straits (presumably on the Otranto Barrage),

BUT... Instead,

• He was appointed to H.M.S. Queen for BT Duties.

Please assume we know about H.M.S. Sarepta, Egmont, and Queen. So no need to worry about those now. But his postings give a broad clue. He was clearly employed on the Otranto Barrage on some form of hydrophone / anti-submarine duties.

What might the abbreviation BT stand for?

Thank you in advance

William

 

 

 

 

 

[horatio2]

Possibly refers to the Broca Tube Hydrophone array. See p.4 et seq on this link  (search term BROCA) -

https://acousticstoday.org/wp-content/uploads/2022/11/U-boat-Predators-in-the-Great-War-A-Problem-of-Physics-Pure-and-Simple-Roy-Manstan.pdf

Edited 15 April by horatio2

[Archer]

Thank you General.

I am most grateful for the suggestion and the link.

We (I say this as the junior member of the two‐man committee) had reached a similar conclusion. I was hoping, however, that some yellowing document existed which spelled out in no uncertain terms what the Navy of those days meant when they used the abbreviation BT

:cheers:

William