Rule 34(e) · Maneuvering & warning

Bend / obstruction signal

One prolonged blast when nearing a blind bend or obstruction; any approaching vessel around the bend answers with one prolonged blast.

You hear: 1 prolonged blast.

Meaning

A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction sounds one prolonged blast. Any approaching vessel within hearing around the bend answers with one prolonged blast of her own.

Key facts

Sounded by
Any vessel nearing a blind bend or an obscured stretch of channel
Repeated
Not a repeating signal — sounded when the situation calls for it
Applies under
International & US Inland
Notation

Source: Rule 34(e) — USCG Navigation Rules (International & Inland)

Rule text is reproduced from the public-domain USCG Navigation Rules. Audio is synthesized to Rule 32 timings.