You spin me right round
This spinning device pushes water backwards to move the ship forwards.
What is a propeller?
This type of valve allows fluid to flow in one direction while preventing reverse flow.
What is a check valve?
This device uses trigonometry and lookup tables to find your way.
What is a sextant?
This room on a fast attack submarine houses the boat's artillery.
What is the torpedo room?
Rather than using a traditional angled launcher, a VLS launches missiles upward from individual cells. VLS stands for this.
Vertical Launch System
This component allows a high-speed engine or turbine to turn a propeller shaft at a lower speed.
What is a reduction gear?
"Hot rock"
What is nuclear powered?
This method of information gathering is how submarines are capable of driving without windows.
What is sonar?
This naval missile is named for a traditional Native American axe and is used to strike targets on land.
What is Tomahawk?
Circulated through an engine, this fluid reduces friction and wear between moving parts.
What is lube oil?
These components discharge and take in sea water to maintain or adjust buoyancy in the ship.
What are ballast tanks?
In a nuclear-powered ship, reactor heat produces steam that turns these rotating machines.
What are turbines?
The (billeted) officer responsible for the safe navigation of the ship.
What is the Navigator?
Costing roughly $3,500 per second in ammunition, this rapid-fire defensive weapon protects ships from incoming missiles.
What is Phalanx CIWS?
These deliberately more reactive metal blocks corrode to help protect a ship’s hull and other submerged components from corrosion.
What is a sacrificial anode?
This propulsion system draws in water and expels it through a nozzle to push a vessel forward.
What are waterjets?
This machine uses fast moving air and fuel to generate power.
What is a gas turbine engine?
The approximate distance covered if a ship travels 2 degrees and 45 minutes of latitude.
What is 165 nautical miles?
These devices are fired from a submarine to divert the attention of incoming torpedoes.
What are countermeasures?
Named for an ancient Greek scientist, this principle says the buoyant force equals the weight of the water a ship displaces.
What is the Archimedes Principle?
This phenomenon occurs when low pressure near a spinning propeller creates vapor bubbles that collapse and can damage its blades.
What is cavitation?
In a steam propulsion plant, this component cools exhaust steam back into liquid water so it can be reused.
What is a condenser?
This four word phrase while navigating means that you are at risk of collision if you do not change course.
What is "constant bearing decreasing range?"
This historical antisubmarine weapon was dropped into the water and set to explode at a selected depth.
What is a depth charge?
This triangular sail is the forwardmost sail on a sailboat.
What is a jib?