Search found 6 matches

by Ski206
Sun Dec 15, 2019 4:54 pm
Forum: Naval Weapons
Topic: American SH shells - Famed or Folly
Replies: 33
Views: 8525

Re: American SH shells - Famed or Folly

I like your definition of 'balanced'. It's at least something to jump-off from. Can you provide a primary USN source which would support that usage? Bill Jurens Mr. Jurens, My understanding of the topic comes from Friedman’s US Battleships an Illustrated Design History. His sources are of course a ...
by Ski206
Sat Dec 07, 2019 5:52 pm
Forum: Naval Weapons
Topic: American SH shells - Famed or Folly
Replies: 33
Views: 8525

Re: American SH shells - Famed or Folly

Consider too the design of the South Dakota class ships. The NC had been originally designed around a 14” gun and when up-gunned to 16” was considered unbalanced. The South Dakota class was intended to be a balanced 35,000 ton treaty battleship with the 16”45 2240lb combination. But when BuOrd deve...
by Ski206
Thu Nov 07, 2019 5:28 pm
Forum: Naval Weapons
Topic: American SH shells - Famed or Folly
Replies: 33
Views: 8525

Re: American SH shells - Famed or Folly

A superheavy projectile held some outer ballistics advantages but, U.S. Navy F-function wich was used for prediction of penetration in american fireeffect tables(Ordnance Sketch 78841) tend to predict a too low critical velocity for penetration at all impact angles above 20 degrees. The error was i...
by Ski206
Sat Oct 19, 2019 4:38 pm
Forum: Naval Weapons
Topic: American SH shells - Famed or Folly
Replies: 33
Views: 8525

Re: American SH shells - Famed or Folly

I think a quote from the Navweaps page on the British 18” guns designed for the N3 battleships is particularly interesting. “The original 18" (45.7 cm) APC shell weight was decided upon in August 1920. Shortly afterwards, from a series of gunnery trials, a mistaken theory was conceived that held tha...
by Ski206
Fri Oct 18, 2019 9:15 pm
Forum: Naval Weapons
Topic: American SH shells - Famed or Folly
Replies: 33
Views: 8525

Re: American SH shells - Famed or Folly

I think that what is being missed in this discussion are the negatives associated with light weight high velocity projectiles. Look at the RN experience with the 16” MK 1 guns kn the Nelson which had a light projectile and high velocity. In service this gun had issues with rapid barrel wear leading ...
by Ski206
Fri Oct 18, 2019 6:47 pm
Forum: Naval Technology
Topic: HMS Hood's armour layout
Replies: 21
Views: 8958

Re: HMS Hood's armour layout

I know this thread is rather old but hopefully I’ll get a response. In a post above a link is provided at admirals.org to a RN study of the immunity zones of their capital ships to the German 15”shell dated 1939. That link no longer works. Does anyone know where that paper can be found today?