🔍 Key Concepts

• Sound signals in narrow channels and fairways (Navigation Rules, Rule 34 – Maneuvering and Warning Signals) • Required actions when hearing a prolonged blast around a bend • The difference between a maneuvering signal and a danger signal

💭 Think About

• Ask yourself: In a narrow channel or fairway with a blind bend, what is the purpose of a single prolonged blast from a vessel you cannot yet see? • Think about whether you are being told "I am here" or "I am in doubt/there is immediate danger." Which type of signal is used for each? • Consider what the rules expect you to do to prevent collision when another vessel has already sounded the appropriate bend signal.

✅ Before You Answer

• Verify what Rule 34 says about a prolonged blast used when nearing a bend in a channel or fairway. • Confirm which signal is specifically reserved as the danger signal indicating doubt or immediate danger. • Check whether the rules require you to answer a bend signal, and if so, with what type of blast.