ballast keel造句

• The modern version is framed with osage orange and planked with oak; there is a lead ballast keel which the original did not have.
• A centreboard differs from a ballast keel in that centreboards do not contribute to the stability of the vessel; their purpose is to provide lateral resistance.
• "U-1 " had several features typical of Lake's designs, including a diving chamber under the bow and two variable pitch ballast keel for vertical stability.
• "U-2 " had several features typical of Lake's designs, including a diving chamber under the bow and two variable pitch ballast keel for vertical stability.
• Its iron ballast keel represents more than half of this displacement, making the Folkboat extremely stiff and seaworthy, and it is one of the smallest craft to have made regular ocean crossings and circumnavigations.
• The " U-1 "-class design had several features typical of Lake's designs, including a diving chamber under the bow and two variable pitch ballast keel for vertical stability.
• Refining the twin ballast keels of the Westcoaster, Rayner gave the Corvette-called " Danica " by her owner the broadcaster Jack Hargreaves-hydrofoil sectioned twin keels, flat on the outside and curved on the inside and very slightly toed in.