| 摘要 |
A watercraft, comprising at least one hull having at least one planing surface, at least one vertical step in the planing surface, an onboard propulsion engine 106, and means 108 for venting exhaust from the onboard propulsion engine 106 at the vertical step in the planing surface while under way in order to introduce gas along the planing surface, the means for venting exhaust including means for venting a first proportion of the exhaust 108A at the vertical step in the planing surface, including a first exhaust conduit 108 that defines a first exhaust flow path 108A leading to the vertical step in the planing surface, and the means for venting exhaust including means for venting a second proportion of the exhaust to atmosphere, including a second exhaust conduit 109 that defines a second exhaust flow path 109A leading to atmosphere, wherein the onboard propulsion engine 106 is not an internal combustion engine with multiple cylinders exhausting through a corresponding number of exhaust ports at the underside.
|
