Research - please help

iambecomelife · 01-06-14, 08:24 PM

Tactical Diameter for "HMS Codrington", a large flotilla leader-type destroyer built in 1929, was very poor at 980 yards full speed.

For Tribal Class destroyers (built around 1937), this figure was better but still not good at slightly over 800 yards. Like "Codrington", Tribals were large destroyers more suitable for fleet actions than convoy escort.

600 yards at full speed was considered an average figure for destroyer-type ships of this era.

Unfortunately I have not been able to find figures for lower speeds.

v-i-c- · 01-06-14, 10:01 PM

Thank you.

Sailor Steve · 01-06-14, 10:47 PM

Some American Tactical Diameters (yards/knots).
Wickes: 770/15, 810/25
Farragut: 850/35
Somers: 1240/20, 860/30
Mahan: 870/30
Bagley: 880/30
Sims: 843/30
Benson: 960/30
Gleaves: 700/25
Fletcher: 950/30
Sumner: 700/30
Gearing: 725/30

Destroyer Escorts:
Edsal: 300/20
John C. Butler: 395/25

Because of their extreme length vs beam (fineness ratio) vs rudder size it's a common trait in most ships that they turn better the faster they go, rather than worse as with cars and planes. I have some British numbers stashed away in notebooks, but It will be awhile before I can dig through all of them.

Quote:

Originally Posted by iambecomelife

Unfortunately I have not been able to find figures for lower speeds.

Unfortunately recording maneuverability at low speed was never much of a priority. They really weren't that concerned with turning capacity at all, as long as they could bring the guns to bear.

v-i-c- · 01-06-14, 10:57 PM

Great. If someone else has any data please post, any kind of data (ships, weapons, whatever) will help increasing realism.

Aktungbby · 01-07-14, 01:45 AM

In looking up the lengths as listed by Sailor Steve

Wicks 314 ft; Farragut 341 ft;Somers 381 ft; Edsall 306 ft etc. etc. and their 800-900 yard turning radiuses we're still basically at 3x turning/length at flank/sea conditions give or take as some were modified with double rudders or extended rudders as the war progressed as in my previous post. Accuracy is wonderful but take it easy on yourself...we're dying to play something new!

set'm all at 2.88% of their length at 28.77 knots

and get on with it.

Just make every escort skipper as astute and nasty as ...Johnny Walker! YEAH!

01-06-14, 08:24 PM	#1
iambecomelife Silent Hunter Join Date: Apr 2005 Posts: 4,589 Downloads: 297 Uploads: 0	Tactical Diameter for "HMS Codrington", a large flotilla leader-type destroyer built in 1929, was very poor at 980 yards full speed. For Tribal Class destroyers (built around 1937), this figure was better but still not good at slightly over 800 yards. Like "Codrington", Tribals were large destroyers more suitable for fleet actions than convoy escort. 600 yards at full speed was considered an average figure for destroyer-type ships of this era. Unfortunately I have not been able to find figures for lower speeds. __________________ https://www.facebook.com/WolvesoftheKaiser/

01-06-14, 10:01 PM	#2
v-i-c- Watch Officer Join Date: Jun 2009 Location: Berlin Posts: 343 Downloads: 10 Uploads: 0	Thank you. __________________ WOTA: Wolves of the Atlantic™ - upcoming mobile U-boat simulation for iOS (later Mac, PC, Linux) • subsim forum • facebook

01-06-14, 10:57 PM	#4
v-i-c- Watch Officer Join Date: Jun 2009 Location: Berlin Posts: 343 Downloads: 10 Uploads: 0	Great. If someone else has any data please post, any kind of data (ships, weapons, whatever) will help increasing realism. __________________ WOTA: Wolves of the Atlantic™ - upcoming mobile U-boat simulation for iOS (later Mac, PC, Linux) • subsim forum • facebook

01-07-14, 01:45 AM	#5
Aktungbby Gefallen Engel U-666 Join Date: Jul 2013 Location: On a tilted, overheated, overpopulated spinning mudball on Collision course with Andromeda Galaxy Posts: 27,966 Downloads: 22 Uploads: 0	In looking up the lengths as listed by Sailor SteveWicks 314 ft; Farragut 341 ft;Somers 381 ft; Edsall 306 ft etc. etc. and their 800-900 yard turning radiuses we're still basically at 3x turning/length at flank/sea conditions give or take as some were modified with double rudders or extended rudders as the war progressed as in my previous post. Accuracy is wonderful but take it easy on yourself...we're dying to play something new! set'm all at 2.88% of their length at 28.77 knots and get on with it. Just make every escort skipper as astute and nasty as ...Johnny Walker! YEAH! __________________ "Only two things are infinite; The Universe and human squirrelyness; and I'm not too sure about the Universe" Last edited by Aktungbby; 01-07-14 at 02:26 AM.