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tanker 
Ship with large reservoirs for transporting liquid petroleum products.
davit
Winch that manipulates the anchors.
transverse bulkhead
Wall that divides the hold across the width thus demarcating the tanks.
lengthwise bulkhead
Wall that divides the hold along the length to demarcate the tanks.
engine control room
Compartment housing the instruments that monitor the ship’s movement and control the engines and other machinery.
pump room
Compartment housing the machinery that pumps the oil in and out of the tanks.
rudder
Submerged component that pivots on a vertical axle and is used to steer the boat.
propeller
Device with blades integrated onto a shaft that is driven by the engine to provide thrust and thus impel the ship.
radar mast
Mast with a radio-wave detection device (radar set) used to prevent collisions when visibility is reduced.
guardrail
Railing along a ship’s deck that protects crew from falling overboard.
separator
Device that removes any water that might contaminate the oil tanks.
radio antenna
Metal conductor that emits and receives radio waves for communications.
bulb
Bulge in the bottom part of the stem that reduces the hull’s water resistance.
mooring winch
Motorized spool around which a mooring cable is wound.
center keelson
Metal girder that runs along the ship’s longitudinal axis to reinforce the bottom of the hull.
web frame
Metal reinforcement that spans the hull transversally.
tank
Watertight reservoir; the hold is divided into several tanks to prevent sloshing.
crossover cargo deck line
Thick pipe that runs transversally and is used to fill and empty the tanks.
bitt
Metal cylindrical fittings attached to the deck for fastening mooring ropes and tow lines.
air relief valve
Device that allows air to escape as oil fills the tanks to displace it.
tank hatch cover
Watertight door that provides access to a tank.
foremast
Mast located near the bow of the deck that supports the navigation lights.
main deck
Flat top that seals the hull and protects the cargo; it provides space for crew to circulate and for auxiliary equipment.
wall side
Vertical part of the hull below the water line.
foam monitor
Pressurized mechanism that produces foam for extinguishing fires.
derrick mast
Short thick mast that supports the derrick.
derrick
Device with pulleys that is mounted on a pivot for handling loads.
