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Krakatoa
Post subject: Re: Graf Von Roon Class CruisersPosted: May 20th, 2017, 8:38 pm
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Thanks very much to everyone for your comments, much appreciated.


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Tobius
Post subject: Re: Graf Von Roon Class CruisersPosted: May 21st, 2017, 4:34 am
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Krakatoa wrote: *
Thanks for your comment Maomatic.

Yes the armour belt was intentional. To defeat the French 13" would have required 260-280mm belt which would have taken the ship right up to the Scharnhorst sized dimensions. The 170mm belt and 88mm deck will comfortably stop any of the 8" shells including the larger US ones. While the larger hull does allow for almost double the size of the diesel installation. The trade off between thicker armour or larger diesel installation. The age old problem with 'large' cruisers. Which one gets priority.
http://www.navweaps.com/index_nathan/Pe ... States.htm

U.S. 8”/55 gun, Mk 15 Hard-Nose Special Common (1930-45) 260-lb shell with 221.5-lb body weight; maximum range is 31,860 yards.

U.S. 8”/55 gun, Mk 19 1-3 (1938-45) 260-lb shell with 216.3-lb body weight; maximum range is 31,860 yards.

U.S. 8”/55 gun, Mk 21 1-4 (1941-44) 335-lb shell with 268.4-lb body weight; maximum range is 30,000 yards.

U.S. 8”/55 gun, Mk 21-5 (1944-72) 335-lb shell with 271.9-lb body weight; maximum range is 30,000 yards.

No it won't. Typical US Japanese engagements around Guadalcanal usually ranged from 7000 to 5000 meters or much less.

Here are the results;

http://www.combinedfleet.com/atully03.htm

Hei was drilled, perforated and swiss cheesed by US 8 inch/55 Mark 12s and 14s throwing shells into her along with US 6 inch and 5 inch shells.

USS San Francisco (probably) finally ripped fatally into that ship's vulnerable stern wrecking her steering. Hei was better armored and armed than the ship illustrated above.

Point? Depending on who does what and on the crews, no ship is float bubble immune just because of some assigned thickness of belt armor around the raft versus expected gun caliber. Hei was far better handled in battle than Graf Spee or Hood or even Bismark. Yet, in spite of that Japanese professionalism, the Americans got her. And they largely had their artillery to thank for it. That work by USS San Francisco set up Hei for the USS Enterprise to finish wrecking her. After the torpedoes it becomes academic, as in the case of Graf Spee, whether she sank from American damage or a scuttle. She died. All that really matters is first cause and those were those eight inch shell hits.
 


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Krakatoa
Post subject: Re: Graf Von Roon Class CruisersPosted: May 21st, 2017, 6:56 am
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Last edited by Krakatoa on May 22nd, 2017, 1:28 pm, edited 1 time in total.

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Tobius
Post subject: Re: Graf Von Roon Class CruisersPosted: May 21st, 2017, 2:26 pm
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.....


Last edited by Tobius on May 22nd, 2017, 1:36 pm, edited 1 time in total.

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Krakatoa
Post subject: Re: Graf Von Roon Class CruisersPosted: May 22nd, 2017, 8:04 am
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emperor_andreas
Post subject: Re: Graf Von Roon Class CruisersPosted: June 13th, 2017, 3:39 pm
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Really nice work...love the Atlantic bow and the three turret design! Worthy successors to the Deutschlands indeed!

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