| 摘要 |
<p>A marine craft (10) having a propeller tunnel (20) in which the sidewalls (31) of the tunnel are essentially parallel and vertical and mate with a descending upper surface of the tunnel which optionally can be divided into a transom plate portion (21), engine plate portion (22), and bottom plate portion (24). The bottom plate portion mates with the bottom of the boat hull in a sharp line intersection. A surfacing propeller (25) and associated drive shaft (26) is mounted in the tunnel with a rudder (18) positioned aft of the surfacing propeller. Baffles (32) are provided on the lateral sides of the tunnel and terminate in a forward portion (34) aft of the bottom plate portion of the tunnel. Optionally the exhaust (45) can be vented onto the bottom plate portion of the tunnel to augment the flow of air.</p> |
