When you're miles offshore, clear communication isn't just about getting the job done — it's about staying safe. Shipping is an international industry, and English has been the common language at sea for decades. But the English you use on a ship is different from everyday conversation. It's precise, standardized, and often tied to safety procedures.
If you're a seafarer or planning to work at sea, knowing the right terms can make your life easier — and help you avoid dangerous misunderstandings. Let's look at the most useful vocabulary and phrases, broken down by where you'll use them.
Bridge and Navigation Commands
The bridge is the nerve center of the vessel. Here, orders must be clear and followed without confusion. The standard phrases used are mostly drawn from the IMO Standard Marine Communication Phrases (SMCP).
- Starboard / Port – Right side (starboard) and left side (port) of the ship. Never use "left" or "right" on the bridge.
- Aft / Bow – Aft is the rear of the ship; bow is the front.
- Hard to starboard – Turn the wheel fully to the right.
- Steady as she goes – Maintain the current course.
- E.T.A. – Estimated Time of Arrival.
A quick example:
Officer: "Hard to port."
Helmsman: "Hard to port, sir."
The helmsman repeats the order to confirm. That's standard practice. No shortcuts.
Safety and Emergency Vocabulary
In an emergency, fast and accurate communication can save lives. The maritime industry uses specific terms that everyone must understand.
- Mayday – The highest distress signal. Only use when life or the vessel is in immediate danger.
- Pan-Pan – Urgency signal, less critical than Mayday. Used for mechanical failure or medical issues that are not immediately life‑threatening.
- Abandon ship – Leave the vessel.
- Muster station – The designated assembly point during an emergency.
- Fire party – The team assigned to fight a fire on board.
Engine Room and Technical Terms
The engine room has its own language. Misunderstanding a single word here could cause a breakdown or a serious accident.
- Main engine – The primary engine that drives the propeller.
- Auxiliary engine – Generators that provide electrical power.
- Ballast – Water taken into tanks to stabilize the ship.
- Bilge – The lowest compartment in the hull, where water collects.
- R.P.M. – Revolutions Per Minute, used for engine speed.
Engine room communication is often written in logs, so spelling matters too.
Engineer log entry: "RPM dropped to 80 on main engine. Checked fuel filter. Found clogged. Replaced. RPM restored to 120."
Short, factual, no fluff.
Everyday Communication on Board
Not everything is official. You also need to get along with crewmates from different countries. These phrases help with daily life on board.
- Watch – A work shift, usually 4 hours.
- Standby – Ready to act when called.
- Galley – The ship's kitchen.
- Mess – The dining area.
- Rounds – A routine inspection of the ship.
A quick tip: Always confirm instructions by repeating them. That habit — called a "closed loop" — prevents mix‑ups in any language.
Final Thoughts
Maritime English is a skill you build through practice, just like steering or tying a knot. Focus on the phrases most relevant to your role. Memorize the safety terms first. Everything else comes second.
And if you want to test your current English level — for free — check out English Measure. We offer a complete test covering Reading, Listening, Writing, and Speaking, designed to help you communicate more confidently on board.
Take your free English level test now.
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