Marine drive with torpedo coming to the surface

摘要

In a marine drive 10 having two counter-rotating surface operating propellers 12 and 14, a lower horizontal torpedo portion 188 of the drive housing 20 has an upper zone 276 with outer surface profiles 11T - 17T along horizontal cross-sections defining wedges with sharp leading tips forming a sharp leading edge 278 for slicing through the water, the sharp leading edge 278 defining a first angle 280 relative to vertical. The torpedo portion 188 has a lower zone 270 with outer surface profiles 1B - 10B along horizontal cross-sections defining wedges with sharp leading tips 1LT - 10LT defining a line 272 at a second angle 274. A skeg 194 extending downwardly from the lower zone (270) of the torpedo portion 188 has a leading edge 288 defining a third angle 290. The third angle 290 is greater than the first angle 280 and less than the second angle (274).