Backstay Stool. Short timber in which lower ends of backstays are set up when no room has been allowed for them in the chains.
Backwash. Troubled water thrown astern of mechanically propelled vessels, especially paddle steamers.
Backwater. Area of a river that is sheltered from main stream and in which there is a very little lateral movement of the water. 2. To back an oar.
Baffle Plates. Iron or steel plates fitted in various parts of heating elements of a boiler to prevent radiation of heat, or to protect against corrosion by waste gases.
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