tanker [2]
Ship with large reservoirs for transporting liquid petroleum products.
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.
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.
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.
foam monitor 
Pressurized mechanism that produces foam for extinguishing fires.
bulb 
Bulge in the bottom part of the stem that reduces the hull’s water resistance.
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.
center keelson 
Metal girder that runs along the ship’s longitudinal axis to reinforce the bottom of the hull.
tank 
Watertight reservoir; the hold is divided into several tanks to prevent sloshing.