IMO Standard Marine Communication Phrases (SMCP) (SMCP)

A standardised set of English phrases for safety-related ship-to-ship, ship-to-shore and onboard communication.

The IMO adopted the SMCP to reduce misunderstanding across language barriers. It covers routine navigation, pilotage, berthing and onboard operations as well as distress, urgency and emergency situations.

The phrases support clear communication but do not replace competent English, correct radio procedure or professional judgement. STCW requires relevant deck officers on specified ships to understand and use them.