| 摘要 |
A propulsion system for a water-borne vessel (11). There is a generally inflexible fin member (13). An inflexible projection member (10) is connected to the vessel. It has resilient connecting means (12) attached to the generally inflexible fin member (13). The inflexible projection member is connected to the vessel so as to be held below water along an axis parallel to the water line. |
