VHF SRC Radio 🔒 Course / Premium

Ship-to-Ship Call

Ship-to-Ship Call. Practice maritime VHF scenario.

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This scenario is part of the full library. Unlock all 15 VHF scenarios with the VHF SRC Course (€199, lifetime) or a Premium subscription (from €19.99/mo).

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Scenario briefing

Key teaching points

Initiate on Channel 16: "[other vessel × 3], THIS IS [your vessel × 3], OVER".
Once contact made, switch to a working inter-ship channel (commonly 6, 8, 72, 77).
Conduct negotiation/coordination on the working channel; return to Channel 16 watch when done.
Channel 70 is DSC ONLY — never use for voice.

Common mistakes to avoid

Conducting an extended conversation on Channel 16 — the distress channel must be clear.
Using Channel 70 by accident — voice on 70 is a serious breach and may interfere with DSC alerts.

Why it matters

Ship-to-ship VHF is the skill that lets you coordinate with another vessel — agree a passing side, negotiate a TSS crossing, request a tow. The format requires both vessels to switch off Channel 16 quickly so the distress channel stays clear.

Exam relevance

Ship-to-ship working-channel selection is a regular VHF SRC oral question; STCW GOC candidates must name the inter-ship channels.

Related scenarios

About SkipperCheck simulators

SkipperCheck offers two browser-based maritime training simulators:

ARPA · AIS · COLREG Bridge Simulator — 54 scenarios covering Rules 2, 5–10, 12–19, 23–30, 34 and 35.
VHF SRC Radio Simulator — 15 scenarios: voice Mayday, DSC distress, Mayday Relay, Pan-Pan, Sécurité, routine.

Both run in any modern browser, on desktop or mobile. No install, no plugins.