You are holding position above Gallipolis...

You are holding position above Gallipolis...

Question 1 of 2707066636ee928f7522a1c5198a0

You are holding position above Gallipolis Lock and Dam when you hear two long blasts of the horn from the lock. This indicates that you should take which action?

Question 1 of 27070

Q

You are holding position above Gallipolis Lock and Dam when you hear two long blasts of the horn from the lock. This indicates that you should take which action?

🔍 Key Concepts

• Inland lock sound signals used on the Western Rivers and inland waterways • Difference between landward and riverward lock chambers at a dam • How locks communicate which chamber or what sequence a vessel should follow

💭 Think About

• When a lock sounds two long blasts, is it usually telling you to "wait," to "proceed," or to specify a particular chamber? • Think about how a lock operator can clearly distinguish between landward vs. riverward chambers using simple sound signals—what pattern would make sense? • If you were the lock operator and wanted a vessel to hold position for traffic versus enter a specific chamber, how might you signal those different instructions so they are not confused?

✅ Before You Answer

• Verify what two long blasts (prolonged blasts) mean in the standard lock signal system for U.S. inland waterways (Western Rivers/Inland Navigation Rules references or USACE lock procedures). • Confirm how many long blasts are associated with landward chamber vs. riverward chamber, or whether long blasts are instead related to traffic direction or waiting. • Make sure you are not confusing meeting/crossing sound signals between vessels (Navigation Rules) with lock and dam operating signals (U.S. Army Corps of Engineers procedures).