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Monday, August 23, 2004

My 2002 version of the Ger/CS/1905 design

I had this elaborate document (which I only have in hard copy, due to my hard disk loss in the fall of 2002) has a drawing and specs for the German scout cruiser that I had designed for 1905. This drawing is very spare, with three uncased funnels, pole masts, and a light bridge, still with a conning tower. There are no tubs for the guns and the torpedo tubes are shown on the centerline, although that wouldn't work, due to the beam being 38ft.
The basic specs were:
  • LWL=370ft
  • B=38ft
  • d=13ft
  • Cp=0.559
  • Cm=0.85
  • Cb (block coefficient)=0.475
  • Legend displacement=2,480tons
At deep load:
  • LWL=370ft
  • B=38ft
  • d=15ft-3in
  • Cp=0.562 (estimated)
  • Cm=0.86 (estimated)
  • Displacement=2,962 tons
The designed speed was 36 knots at 44,000 SHP (original intent) The maximum overload was 52,800 SHP. I had hoped for 37.4 knots, but I doubt that was possible. It remains for me to do the calculations to see what was actually possible at legend displacement.
The armament was 5-4in/50 QF and 2-21in torpedo tubes. Both are not good choices, as the 21in torpedo didn't come into service until later, and not in the German navy, but the British. The contemporary German torpedo size was 17.7in (which is what the British 18in actually were). The guns should have been 10.5cm (4.1in, but were not).
There was also a small 2in high tensel steel belt, over the machinery. 2in might have been enough to "flash off" 12pdrs.
This design was inspired, as I may have said before, by the "Super Swift" type proposed in 1912 in Britain.

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