Search found 213 matches

by delcyros
Thu Apr 12, 2012 11:01 pm
Forum: Bismarck General Discussion
Topic: Bismarck's fate.
Replies: 34
Views: 6884

Re: Bismarck's fate.

If one of the rudders was working, steering astern by the Hessen system where two screws going astern and one screw ahead in order to neutralize the rudder effect may be a viable option. Not sure about the weather involved and resulting speed would be very low.
by delcyros
Wed Apr 11, 2012 1:09 pm
Forum: Naval Technology
Topic: What was the real ROF advantage of triple turrets in WW1?
Replies: 4
Views: 2330

Re: What was the real ROF advantage of triple turrets in WW1

With one round per salvo & turret, ammunition feed and firing sequence problems are greatly reduced in triple turrets. While twin turrets may have one round per salvo and turret and up to three turret salvo´s per minute, the mean actual output may drop due to drill errors or mechanical casualities. ...
by delcyros
Wed Apr 04, 2012 6:35 pm
Forum: Naval History (1922-1945)
Topic: Re arming the Twins
Replies: 6
Views: 1915

Re: Re arming the Twins

The barbettes had enough diamater but new turrets had to be designed for proper ammunition handling in the more confined spaces below.
by delcyros
Fri Mar 02, 2012 8:47 pm
Forum: Hypothetical Naval Scenarios
Topic: Risk Theory Pays Off
Replies: 15
Views: 2363

Re: Risk Theory Pays Off

Wasn´t Coronal also fought in a gale?
by delcyros
Sun Feb 26, 2012 9:36 pm
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

I´m afraid, I don´t know all the details but I tend to believe the design process has to be seen in light of earlier MAN ship Diesel applications, f.e. the KÖNIGSBERG class light cruisers center shaft Diesels (1927) and 1910 to 1919 projects.
by delcyros
Fri Feb 24, 2012 2:45 pm
Forum: Naval History (1922-1945)
Topic: Battleship Vittorio Veneto
Replies: 100
Views: 18938

Re: Battleship Vittorio Veneto

@Delycros, There were no US battleship guns present in the tests taken into consideration by Nathan in his "decapping revisited" thread. That doesn't mean they were all type 1... And there is at least 1 example that shows very good horizontal performance of 16" US BB shell: The 2x16" shells from Ma...
by delcyros
Fri Feb 24, 2012 10:30 am
Forum: Naval History (1922-1945)
Topic: Battleship Vittorio Veneto
Replies: 100
Views: 18938

Re: Battleship Vittorio Veneto

Acc. to Nathan Okun, all USN APC, except a single batch of 6in APC and US Army APC (not used on battleships) were type 1 capped.
by delcyros
Thu Feb 23, 2012 7:08 am
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

The Panzerschiffe Diesel engines were significantly smaller than the massive devices from the first two decades of the 20th century. The single MAN 9Z42/58 was developing 7100 iHP rated (continous rated power was less at 6550 iHP) at 450 rpm and four engines each were coupled to a single shaft via h...
by delcyros
Wed Feb 22, 2012 1:41 pm
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

That is correct. Top speed and endurance were improved with Diesel engines. SMS SACHSEN´s rated design speed was 22.25 kts, which would translate to in between 24.0 and 25.0 kts trial under peacetime trial conditions. I have a more hypothetical question. How difficult would it have been to retro fit...
by delcyros
Tue Feb 21, 2012 11:21 am
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

My reading is that the 200t of Diesel oil are for electrical power generation of the ship Diesels, not for main propulsion. SMS SACHSEN´s construction displacement contains 900t fuel (500t coal + 400t Diesel oil). Deep load would be 4,000t (=2500t coal + 1500t Diesel oil). The specific fuel consumpt...
by delcyros
Mon Feb 20, 2012 10:39 pm
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

It's perfect Byron. Displacement definitions really are a mess in this period, particularely since trial displacements -at least in the HSF- changed with outbreak of the war towards a full load configuration (not overload). So we have to seperate between peacetime and wartime trial displacements. Th...
by delcyros
Mon Feb 20, 2012 10:12 am
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

Considering that the MOLTKE´s -with their less efficient hullform could go 4,120nm @ 14kts with 3,100t of fuels with direct drive turbines, I wouldn´t call 8000nm @ 14kts with reduction geared turbines on 6,000ts fuels an improvement... Specific fuel consumption in forced power, 6 hour trial runs in...
by delcyros
Mon Feb 20, 2012 9:52 am
Forum: The Dreadnought Era (1906-1921)
Topic: What am I looking at?
Replies: 4
Views: 2679

Re: What am I looking at?

Would You mind to add a closeup of the signature?
by delcyros
Sun Feb 19, 2012 9:26 pm
Forum: The Dreadnought Era (1906-1921)
Topic: Range of Ersatz Yorck and Mackensen?
Replies: 18
Views: 5627

Re: Range of Ersatz Yorck and Mackensen?

Die Fahrstrecke gemass Probefahrt bezieht sich auf den Brennstoffvorrat bei der Probefahrt (sog. Probefahrtverdrangung, in der Regel niedriger als die Konstructionsverdrangung). Pay attention to the definition of displacement. "Probefahrtverdrängung" litterally means trial displacement, which is a ...
by delcyros
Fri Feb 10, 2012 3:20 pm
Forum: Naval Propulsion
Topic: HMS Howe speed
Replies: 23
Views: 6434

Re: HMS Howe speed

For HMS HOWE, some data can be extrapolated on her speed with aviable data. used data: fuel consumption trials (clean bottom, temperate water), two data points: 016150 SHP = 16.0 kts 066000 SHP = 24.0 kts in addition to that, various data from speed trials can be included, additonally, I have includ...