BOTH INTERNATIONAL & INLAND You are...

🔍 Key Concepts

• Definition of a power-driven vessel vs. a sailing vessel when an engine is in use (Navigation Rules, Rule 3 and Rule 25) • Required lights and shapes for sailing vessels and for vessels under power (Navigation Rules, Part C) • Sound signals in restricted visibility for vessels underway (Navigation Rules, Rule 35)

💭 Think About

• When a sailboat has its engine running and propeller engaged, how is it classified under the Rules: as a sailing vessel or a power-driven vessel? • Which signals (lights, shapes, and sound signals) apply specifically to a vessel that is considered power-driven and which apply only to a vessel considered sailing? • Look at each option: which one describes a requirement for a vessel that is truly operating as a sailing vessel only, and which describes one for a power-driven vessel?

✅ Before You Answer

• Verify how the Rules define a power-driven vessel when the engine is in use, even if sails are set. • Check what day shape (if any) is required for a power-driven vessel that also has sails set. • Confirm what sound signal in fog is required for a vessel underway making way that is classified as power-driven, and whether prolonged vs. short blasts apply.

BOTH INTERNATIONAL & INLAND You are proceeding under sail with the auxiliary engine running and the propeller engaged. Which statement is TRUE?

You must display a red light over a green light at the masthead.

By day, you must display a black diamond shape forward.

In fog you must sound one prolonged blast at two minute intervals when making way.

If most of the propelling power comes from the sails, your vessel is considered a sailing vessel.

🔍 Key Concepts

💭 Think About

✅ Before You Answer