Rule 25 Sailing Vessels Quiz

According to paragraph A, what lights should sailing vessels underway exhibit?

• All-round red light over an all-around green light

• Conical shape

• Side lights and a stern light

• Masthead light

If a vessel is less than 20 meters in length, where can it combine all the required lights?

• At the waterline

• At the bow

• At the stern

• At or near the top of the mast

When can a vessel show an all-round red light over an all-around green light at the top of the mast?

• When the vessel is motor sailing

• When the side lights and stern light are separate

• When the vessel is less than 7 meters

• When the side lights and stern light are combined

What should a vessel less than 7 meters do if it's not practicable to exhibit the required lights?

• Use an electric torch or lighted Lantern showing a white light

• Continue without any lights

• Use a red light only

• Use a green light only

What should be avoided when trying to attract somebody's attention with an electric torch?

• Shining it at the sails

• Shining it at the water

• Shining it at the bridge of another vessel

• Shining it at the sky

What should a vessel under sail and propelled by machinery exhibit to indicate motor sailing?

• Side lights and a stern light

• Masthead light

• Conical shape

• All-round red light over an all-around green light

In paragraph B, what can vessels less than 20 meters do with the required lights?

• Combine them into a single Lantern at the bow

• Combine them into a single Lantern at the stern

• Combine them into a single Lantern at or near the top of the mast

• Use separate Lanterns for each light

What should a vessel do if it's less than 7 meters and can't exhibit the required lights?

• Continue sailing without any lights

• Use a red light only

• Use a green light only

• Have an electric torch or lighted Lantern showing a white light ready at hand

When can a vessel exhibit an all-round red light over an all-around green light at the top of the mast?

• When the side lights and stern light are combined

• When the vessel is motor sailing

• When the vessel is less than 20 meters

• When the vessel is over 7 meters

What should a vessel do if it's under sail and also propelled by machinery?

• Exhibit side lights and a stern light

• Exhibit a conical shape

• Exhibit a masthead light

• Exhibit an all-round red light over an all-around green light