The material used for caulking hulls. Often hemp picked from old untwisted ropes.


Related Terms

CALK

To fill seams in a wood deck with oakum or hammer the adjoining edges of metal together to stop leaks.

CAULK

To fill seams in a wood deck with oakum or hammer the adjoining edges of metal together to stop leaks.

CALKING

Filling the seams of a vessels planking with oakum or cotton..

POISON

A material which reduces the emission of electrons from the surface of a cathode.

PLUGGING

1. Braking an electric motor by reversing its connections, so it tends to turn in the opposite direction; the circuit is opened automatically when the motor stops, so the motor does not actually reverse. 2. The formation of a barrier (plug) of solid material in a process flow system, such as a pipe or reactor.

PLASTICORDER

Laboratory device used to predict the performance of a plastic material by measurement of temperature, viscosity, and shear-rate relationships. Also known as plastigraph.

PLASTICIZE

To soften a material to make it plastic or moldable by adding a plasticizer or by using heat.

PLASTICATE

To soften a material by heating or kneading. Also known as plastify.

PILOTED IGNITION

The accidental initiation of combustion by means of contact of gaseous material with an external high-energy source, such as a flame, spark, electrical arc, or glowing wire.

PIEZOELECTRIC GAGE

A pressure-measuring gage that uses a piezoelectric material to develop a voltage when subjected to pressure; used for measuring blast pressures resulting from explosions and pressures developed in guns.

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