If you work at sea, maritime English is not just a language skill — it is a professional requirement. Whether you are a deck officer, an engineer, or a rating, clear communication in English can mean the difference between a safe voyage and a dangerous incident at sea.
In this article, we cover the most important maritime English phrases, vocabulary, and communication standards every seafarer needs to know — from bridge communications to emergency procedures.
Why Maritime English Matters for Seafarers
The International Maritime Organization (IMO) has established English as the official language of the sea. STCW (Standards of Training, Certification and Watchkeeping) regulations require seafarers to demonstrate proficiency in maritime English in order to obtain or renew their certificates.
Poor communication at sea causes accidents. According to research from the Marine Accident Investigation Branch (MAIB), language barriers contribute to a significant portion of maritime incidents each year. Fluency in maritime English helps seafarers:
- Communicate clearly with vessel traffic services (VTS) and port authorities
- Read and understand technical manuals, safety procedures, and regulations
- Work effectively with multinational crews
- Pass oral and written exams for STCW certification
- Advance their career to officer and command-level positions
SMCP — The Standard Marine Communication Phrases
The IMO Standard Marine Communication Phrases (SMCP) is the official set of phrases recommended for use in ship-to-ship, ship-to-shore, and onboard communications. Learning SMCP is mandatory for all seafarers who need to communicate in an operational capacity at sea.
Distress, Urgency and Safety Communications
- MAYDAY MAYDAY MAYDAY — distress call (vessel in grave and imminent danger)
- PAN PAN PAN — urgency signal (serious situation but not immediate danger to life)
- SECURITE SECURITE SECURITE — safety message (navigational or meteorological warning)
Essential VHF Radio Communication Phrases
- “This is [vessel name], calling [station name] on channel [number].”
- “Roger” / “Received” — message received and understood
- “Wilco” — will comply with instructions received
- “Say again” — repeat your last message
- “Over” — my transmission is ended, your response is expected
- “Out” — conversation is ended, no reply expected
- “Standby” — I must pause for a few seconds, please wait
Port Approach and Berthing Phrases
- “Request permission to enter port.”
- “ETA [time] [date]. Request berth information.”
- “Pilot required at [time] at [position/pilot station].”
- “Stand by fore and aft” / “Let go fore and aft”
- “Heave away” / “Stop heaving” / “Ease off”
Essential Maritime English Vocabulary by Department
Deck Department
Officers and ratings working on deck need vocabulary related to navigation, cargo operations, mooring, and safety:
- Navigation: waypoint, course alteration, COG (course over ground), SOG (speed over ground), ECDIS, AIS, radar overlay, cross-track error
- Mooring: headline, stern line, spring line, breast line, bollard, winch, windlass, capstan, fairlead, bitts
- Cargo: stowage plan, bill of lading, draft survey, ullage, trim, list, stability, lashing, securing, hold cleaning
- Safety: muster station, lifeboat station, fire damper, CO2 system, immersion suit, EPIRB, SART, life jacket, lifebuoy
Engine Department
- Machinery: main engine, auxiliary engine, boiler, generator, compressor, pump, heat exchanger, separator, purifier, turbocharger
- Maintenance: overhaul, service interval, wear limit, clearance, torque, lubrication, anti-corrosion coating, dry-dock repair
- Systems: fuel oil system, cooling water system, ballast system, bilge system, hydraulic system, compressed air system
Maritime English for Watchkeeping Officers
The Officer of the Watch (OOW) must communicate confidently with vessel traffic services, other vessels, pilots, and port authorities. A standard VTS position report uses this format:
“[VTS call sign], this is motor vessel [name], [flag], [call sign]. My position is [lat/long]. Course [degrees]. Speed [knots]. Bound for [port]. ETA [time]. Request traffic information and berthing instructions. Over.”
How to Prepare for Maritime English Exams
- Study the IMO SMCP manual — Download the official publication and memorize standard phrases for each communication scenario.
- Practice VHF radio communication — Role-play radio conversations simulating distress calls, port approaches, and routine traffic reports.
- Read technical manuals in English — Get used to the style and vocabulary of ship-specific manuals, ISM procedures, and flag state circulars.
- Join a maritime English course — A structured course tailored to maritime professionals covers the language skills needed for both exams and onboard work.
- Watch video materials — Maritime accident investigation reports and VTS simulation videos are excellent listening comprehension resources.
Common Mistakes Seafarers Make in Maritime English
- Using non-standard phrases — Saying “yes” or “no” instead of “affirmative” or “negative” on VHF radio causes dangerous ambiguity.
- Unclear position reports — Always give position in standard format (lat/long or bearing and distance from a known point).
- Mixing languages — In multinational crews, always default to English for safety-critical communications.
- Speaking too fast — Radio communication requires a clear, measured pace of about 100 words per minute.
- Not confirming understanding — Always repeat back critical orders to confirm you understood correctly.
Improve Your Maritime English with Sea Service
At Sea Service, we offer a professional Maritime English course designed specifically for working seafarers. Our program covers IMO SMCP, VHF radio communication practice, technical English for deck and engine departments, oral exam preparation for STCW certification, and business English for correspondence with shipowners and charterers.
Our instructors have real seafaring experience and understand the language challenges that officers and ratings face at sea. Lessons are conducted online, so you can study from anywhere in the world — whether you are on leave or preparing for your next contract.
Start your Maritime English course today and take the next step toward a safer, more successful career at sea.