The original design called for 100,000 shp, but this was changed during building and the new rating was 110,000shpalecsandros wrote:Well, I'm thinking about KGV class normal power output, which was 100.000hp. The maximum power was 110.000 hp (at least the design specs). So achieving 134000hp would be 34% above the normal, and 21.8% above the maximum. The Bismarck maximum output was 138000hp, with an overload of 9.2%, up to 150700hp...dunmunro wrote:
How did you calculate 34%? PoW ran trials at 11.6k shp at 28 knots @42.1k tons . The power curve will rise steeply as the speed increases, so another 22k shp to gain 1.1 knots is about right. The log entries confirm the data from G&D.
Bismarck's nominal power rating was 118K shp, but it achieved considerably more.
I remember a KGV speed trial @41000t, at around 113000hp, and 28.5kts. I may be wrong though...
PoW ran trials at 111,600 shp and made 28 knots.
The normal power was 110,000shp with a design overload of 125,000shp:
4-shaft single reduction geared turbines,
110,000shp = 27.5 knots (29.25 knots with 125,000
shp maximum); 8 Admiralty 3-drum boilers.
Maximum speed at full load = 28.25 knots
Maximum continuous sea speed = 27.8 knots
Raven, King George V class Battleships, (Ensign 1)
But as is common with warships, these figures were exceeded in service.