Duquesne was longer, narrower, and deeper-draught than the Pensacola class, giving the French cruiser a hull shaped for speed. Eight boilers drove four geared-turbine shafts at roughly 118,000 shaft horsepower to reach the 34-knot requirement. With 1,842 tons of fuel oil, the quoted radius was about 5,000 nautical miles at 15 knots, 1,800 at 29 knots, and only 700 at 33 knots. Those figures make the design trade-off concrete: the machinery bought impressive maximum speed but could not sustain it over an oceanic cruising radius.
Notable Point · 15:04-17:36
Speed hull, machinery, and the range penalty
A long, narrow hull and roughly 118,000 shaft horsepower delivered 34 knots, but the fuel-radius figures expose the operational cost of sustained speed.