Rule 35(e) · Restricted visibility
Manned vessel being towed (fog)
One prolonged + three short blasts every 2 minutes — a manned towed vessel (the last of the tow), sounded right after the towing vessel's signal when practicable.
You hear: 1 prolonged blast, then 3 short blasts.
Meaning
“A vessel towed or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound four blasts in succession, namely one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel.”
Key facts
- Sounded by
- Manned vessel being towed — the last vessel of the tow if more than one
- Repeated
- every 2 minutes
- Applies under
- International & US Inland
- Notation
- — · · ·
The vessels that sound this signal also show specific lights and day shapes.
Lights & ShapesRelated signals
Source: Rule 35(e) — USCG Navigation Rules (International & Inland)
Rule text is reproduced from the public-domain USCG Navigation Rules. Audio is synthesized to Rule 32 timings.