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A steel bar which plays an essential part in the launching mechanism of a ship. When the dog shores, the blocks of timber which support either side of a ship on the launching ways, are knocked out, the dagger acts as a trigger which releases the vessel and starts it down the launching ways. Nowadays when a ship is launched the whole operation is performed by power, and men with sledgehammers no longer knock out the dog shores, but the principle and mechanics remain unaltered.

See also shipbuilding.

See also shipbuilding.

Subjects: Maritime History.

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