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Iowa 127mm ~ 12-18 rpm Oerlikon 20mm ~ 250-320 rpm Bofors 40mm ~ 120 rpm TOTAL: 18 x 20 + 49 x 320 + 80 x 120 = 25640 shells/minute Did you have an idea about how many shells these ships carried. BTW german outfit for 20mm Bismarck 1941 carries ~44.000 shells for 20mm Tirpitz 1944 carries ~138.000 ...

.627

wich unit of measurement?

Ther is also a photo of Hipper in Marinearsenal Spezial Band 6 "Die Panzerung der deutschen Kriegsschiffe 1920 - 1945" page 18
english translation
http://www.kbismarck.com/articles.html

Unterlagen zur Bestimmung der Hauptkampfentfernung did not mention other belt thicknes then 80mm.

in other cases special features (increased thicknesses) were usually mentioned.

:oops: thanks for the hints Thorsten Wahl wrote: this figure is really interesting as Bismarcks(calculated) construction speed at construction shp (115,500 shp) was also 27,5 kn / 28 kn (Akte Allgemeine Konstruktionsunterlagen Überwasserschiffe available at the Marinearchiv Freiburg) displacement ac...

Howe ran trials with 27.5 knots at 112,930 shp (114,496 mhp this figure is really interesting as Bismarcks(calculated) construction speed at construction shp (115,500 shp) was also 27,5 kn / 28 kn (Akte Allgemeine Konstruktionsunterlagen Überwasserschiffe available at the Marinearchiv Freiburg) dis...

as 7,700 m³ were approx 6,468 metric ton

s

this 6468 t almost exactly fits the

3226t+3226t =6452 t fuel oil mentioned in the weight calculation of Bismarck

it seems the 1009 t resp ~2000t Ölsonderzuladung was unconsidered in this calculation.

Marc does the primary source has a document name and date? ----------------------------------------------------------------------------------------------------------------------- Charts doesnt consider varying quantities of fuel and different calorific valus of fuel) Bismarck at 28 knots consumption...

dunmunro wrote: Where did you get the data for Howe?

From the piece you posted at the ship model forum

Hipper class had no external belt. The belt was hidden under the bulge of the "äußerer Wallgang"

additional Iowa and KGV class (howe)

seem the US ships show relatively better performance within part load (Teillastbereich)
(Charts doesnt consider varying quantities of fuel and different calorific valus of fuel)

for comparison
velocity range chart for North Carolina according Data from the above link in post 1
and Bismarck chart from data points at ~17kn??, 21 und 28

fuel capacity of NC was 1,879,751 gallons wich is 7,115m³

Thank you both for the comments and Marc also for the additional explantion of the 19,2% dockjard times at navweaps. in general the fuelconsumption doesnt seem that much worse as it often is described. And one has to be carefully comparing different types of fuel(heavy fuel oil - light fuel oil) and...

MDV 601... mentions 17 knots in the text(but not as average). Using a graphical solution compared to usual range/velocity charts, less then 17kn seem inplausible to me Maybe possible speed could be 18 knots or more. But I decide to choose the lower speed as "worst case". If the 300m³/day o...

yes the data were estimates from Group West, based on fuel consumption graphs/calculations, on wich I assume they had access german ships use light fuel oil - density approx 0,82-0,86 metric tons per m³ so 7,700 m³ ~ 6,468 metric tons calculation endurance/range 17 kn ---> 408 seamiles per day 300m³...