Navy Tribe

By Senior Chief Miller (Ret.), Former Pacific Fleet Admin Officer Written from fleet experience; references align with RTC Great Lakes training standards | Last updated: April 2026

You have survived the initial shock of arrival, the grueling physical conditioning, the relentless uniform inspections, and the endless hours of classroom instruction. You have spent the last eight weeks at Recruit Training Command (RTC) Great Lakes being broken down and built back up. But before you can trade your “RECRUIT” ball cap for the coveted “NAVY” ball cap, you must face the ultimate test.

You must survive Battle Stations 21.

Battle Stations 21 (BST-21) is the 12-hour, overnight crucible that serves as the final exam of Navy Boot Camp. It takes place aboard the USS Trayer (BST-21), an incredibly realistic, state-of-the-art Arleigh Burke-class destroyer simulator. This is not a written test. It is a high-stress, sensory-overload environment designed to simulate the worst possible day at sea.

If you fail here, you do not graduate.

To conquer the USS Trayer, you need more than just physical stamina; you need extreme mental fortitude, flawless teamwork, and a deep understanding of basic Navy survival skills. Here is the unvarnished, definitive guide to exactly what happens during Battle Stations 21 and how you can ensure you cross the finish line.

What is the USS Trayer (BST-21)?

Before you can understand the test, you must understand the environment. The USS Trayer is not a standard classroom. It is a 210-foot-long mock-up of a Navy destroyer housed entirely inside a massive, 157,000-square-foot facility at Great Lakes.

The Navy spent over $80 million building this simulator with the help of Hollywood set designers and theme park engineers. The moment you cross the brow and board the ship, the illusion is absolute.

• The ship sits in a massive pool of water and is surrounded by projection screens that simulate the ocean horizon, nighttime environments, and incoming threats.
• The interior is an exact replica of a real warship, complete with narrow passageways, steep ladders (stairs), watertight doors, and cramped berthing compartments.
• The simulator utilizes high-end theatrical smoke, flashing strobe lights, and a localized sound system that blasts the terrifying noises of structural groaning, incoming missiles, and blaring alarms.
• It uses over 90,000 gallons of water to simulate active shipboard flooding.

You will board the USS Trayer in the evening, already exhausted from a full day of training. For the next 12 hours, you and your division will be pushed to your absolute physical and psychological limits.

The Mental Game: Preparing for the Unknown

The most difficult aspect of Battle Stations 21 is not the physical labor—it is the psychological pressure.

Your Recruit Division Commanders (RDCs) have spent eight weeks teaching you how to act. Aboard the USS Trayer, they step back. They transform from instructors into silent evaluators. They are watching to see if the training has become muscle memory.

The environment is specifically engineered to induce panic. When the lights go out, the red battle lanterns kick on, the smoke fills the compartment, and the water starts rising, your brain will scream at you to freeze.

The Navy does this intentionally. In the Fleet, ships catch fire. Ships take on water. When a catastrophic event happens at sea, there is no fire department to call. The crew is the fire department. Battle Stations 21 is designed to prove to you—and to the Navy—that when chaos erupts, you will rely on your training rather than giving in to fear.

The Core Scenarios: What to Expect on the Deckplates

Over the course of the 12-hour evolution, your division will rotate through 17 different mass-casualty and daily-operations scenarios. You will not know what is coming next. While the exact sequence is kept under wraps, you must be prepared to flawlessly execute the following core competencies.

Damage Control and Shipboard Firefighting

Fire is the single greatest threat to a ship at sea. During BST-21, you will experience simulated Class Alpha (combustibles), Bravo (fuel/oil), and Charlie (electrical) fires.

• You will be required to properly don your firefighting ensemble (FFE) and Self-Contained Breathing Apparatus (SCBA) in the dark.
• You will operate the fire hose as a team, communicating over the roar of the simulated flames.
• You will learn the critical importance of boundary starvation—cooling the bulkheads (walls) around the fire to prevent it from spreading to other compartments.

Shipboard Flooding and Shoring

When a missile strikes or a ship runs aground, the ocean tries to get inside. You will be thrust into a compartment that is actively flooding with cold water.

• Your team will have to identify the source of the rupture and apply emergency pipe patches (like the soft patch or banding).
• You will use heavy wooden beams or steel mechanical shores to brace buckling watertight doors and bulkheads.
• You will have to do all of this while standing in waist-deep water, screaming communications to your shipmates over the deafening sound of rushing water.

Mass Casualty and Triage First Aid

During a combat scenario, Sailors will get hurt. You will encounter training mannequins—weighing as much as a real human being—with simulated traumatic injuries.

• You must assess the casualty, apply tourniquets, treat for shock, and package the patient into a Stokes stretcher.
• Moving a 180-pound body strapped to a rigid metal basket up a steep, narrow shipboard ladder requires intense coordination, strength, and spatial awareness. If you drop the stretcher, you fail the evolution.

Magazine Sprinklers and Ordnance Handling

Warships carry massive amounts of high explosives. If a fire threatens the ship’s armory or missile magazines, the temperature must be controlled.

• You will be tasked with operating the complex magazine sprinkler valves to flood the ordnance rooms and prevent a catastrophic explosion.
• You will also conduct working parties, passing heavy boxes of supplies and simulated ordnance hand-to-hand in a high-speed bucket brigade. This will test your shoulder and back endurance to the breaking point.

How to Fail (And How to Ensure You Don’t)

It is rare to fail Battle Stations 21, but it does happen. When recruits fail, it is almost never because they were not strong enough to lift a hose. They fail for one of three reasons:

1. Breaking Military Bearing: If you panic, freeze, cry, or refuse to enter a dark compartment, you have proven you cannot be trusted in a real emergency.
2. Going Rogue: The Navy relies on the chain of command. If you ignore the designated scene leader and try to fix a flooding pipe all by yourself to look like a hero, you will fail the evolution. Lone wolves sink ships.
3. Safety Violations: If you take off your SCBA mask in a smoke-filled room, or if you carelessly drop a piece of shoring on a shipmate’s head, the evaluators will immediately pull you from the scenario.

The Survival Rule: To pass, you must communicate loudly, listen to the person in charge, move with a sense of urgency, and never, ever quit.

The Physical Demands: Stamina and Endurance

Do not underestimate the physical toll of staying awake and performing heavy manual labor for 12 straight hours.

You will be wearing heavy coveralls and protective gear. You will sweat profusely. You will be sprinting down passageways, climbing up and down vertical ladders with heavy equipment, and swinging heavy mallets to drive shoring wedges into place.

Hydration is your best friend. In the days leading up to Battle Stations, drink as much water as you can hold. During the few brief moments of downtime aboard the USS Trayer, stretch your calves and back. Cramping in the middle of a flooding scenario is a recipe for disaster.

5 Actionable Tips to Prepare Before You Ship Out

You do not have to wait until you arrive in Great Lakes to start preparing for Battle Stations 21. Use these five strategies to build your foundation before you even step on the bus.

1. Memorize the Language: The Navy has its own language. Learn the difference between port and starboard, forward and aft, deck and overhead, bulkhead and passageway. If the evaluator yells to “brace the aft bulkhead,” you cannot afford to waste five seconds wondering which wall that is.
2. Build Leg and Core Strength: Push-ups are great, but Battle Stations requires functional strength. Start doing weighted squats, lunges, and farmer’s carries. You need the leg strength to climb ladders while carrying heavy loads.
3. Study Basic Damage Control: Watch publicly available Navy training videos on basic pipe patching, the fire tetrahedron, and different classes of fire. Knowing that water makes a Class Bravo (fuel) fire worse will put you leaps and bounds ahead of your peers.
4. Embrace Team Sports: If you are a solo gym-goer, start participating in team sports or group fitness classes. You need to get comfortable taking directions from peers and communicating under physical exhaustion.
5. Mental Visualization: Practice remaining calm in uncomfortable situations. When your heart rate spikes, practice box breathing (inhale for 4 seconds, hold for 4, exhale for 4, hold for 4). Controlling your heart rate is the key to preventing panic in a confined space.

The Emotional Payoff: The Capping Ceremony

If you rely on your training, trust your shipmates, and push through the exhaustion, the long night will eventually end.

As the sun rises over Lake Michigan, the simulated alarms on the USS Trayer will finally fall silent. You will be battered, soaking wet, covered in soot, and more exhausted than you have ever been in your entire life. You will march off the ship and form up in the compartment.

Then, the music will start. “Anchors Aweigh” will play over the speakers.

Your RDC—the person who has yelled at you, disciplined you, and pushed you to your breaking point for two straight months—will walk down the line. They will look you in the eye, take the “RECRUIT” cap off your head, and hand you a ball cap that says “NAVY.” They will shake your hand and call you “Sailor” for the very first time.

It is a moment that you will remember with crystal clarity for the rest of your life. It is the moment you officially join the world’s most powerful maritime force.

Keep your eyes in the boat, study your damage control manuals, and when the alarms sound on the USS Trayer, run toward the fire. You are ready.