Thru Hull
Similar Terms: Thru-Hull,Through Hull,Through-Hull,T/H
Thru Hull is a term used to describe a fitting that is attached through the Hull of a Boat. A thru Hull fitting requires a hole to be cut/drilled in the boats Hull for the fitting to pass through. Some examples of thru Hull attachments are a sea-cock and hose and thru Hull transducers. Thru hulls can be used to expel waste water, such as from a sink, to let sea water in, such as for engine cooling or to allow placement of sensors such as depth gauges.
Thru Hull Transducers are often mistakenly confused with shoot thru hull

Bronze Thru Hull Transducer - long stem usually used with a Fairing Block

Plastic Thru Hull Transducer - flush mounted
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