What does a flashing red light on a boat mean?

(1) An individual who is on a vessel engaged in a government sanctioned public safety activity or a commercial vessel performing a public safety activity may display an alternately flashing red and yellow light signal.

Which flashing light tells you to enter a river lock?

A green flashing light is the color signal that you can enter a river lock. You could also hear horn blasts. These are also a signal also to enter, but only if the green light is flashing at the same time. Just like traffic lights on the road, red means stop and do not enter.

What does a flashing white light mean on a boat?

Safe Water Marks

It has one long white light flash every 10 seconds. Seeing these marks means it is safe to pass in every direction. You can commonly find these in fairways, mid-channel or approaching land from the open sea (landfall mark).

What does a flashing blue light on a boat mean?

The blue flashing light is NOT a towing light. It should be noted that the blue flashing light provides no special privileges with respect to rules of the road. The blue flashing light is also used as an identification signal by Canadian and United States law enforcement ships when engaged on law enforcement duties.

What does a red light on a lock mean?

Flashing red light means stay well clear of the lock and do not enter. Allow plenty of room for boats to exit the lock. Flashing amber light means approach the lock at a safe speed and under full control. Flashing green light means enter the lock.

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How do boats go through locks?

Most locks have two sets of gates (top and bottom) and a chamber which your boat enters into. Crucially, locks also have openings (or sluice gates) at the top and bottom and it is by opening these that water is allowed into and out of the chamber to raise or lower the water level - and hence the boat.

How do boats go through dams?

How does gravity help a boat get across a dam and lock system? (Answer: Gravity "moves" river water in and out of the locks. Water is drained [by gravity] from the first lock until it is even with the second lock. When the water levels are even, the vessel can move into the lower lock).

What does a flashing yellow light on a boat mean?

(1) An individual who is on a vessel engaged in a government sanctioned public safety activity or a commercial vessel performing a public safety activity may display an alternately flashing red and yellow light signal.

What does a yellow light on a boat mean?

When commercial vessels are towing or pushing a barge, they display one or more yellow lights in place of a sternlight. There may be an unlit space of several hundred yards between the lights displayed on the bow and stern of the composite formed by the commercial vessel and its barge(s).

What color lights are on boats?

Red/Green/Bicolor

Colored lights are always sidelights and the different color indicates the side. Red lights are located portside, and green are starboard. The lights shine from dead ahead to 112.5º aft on either side of the vessel.

What do red and white lights mean on a boat at night?

When you are in a power-driven vessel and you see a red, a green, and a white light, you are approaching another power-driven vessel head-on and both vessels must give way.

What do red and green lights mean on a boat?

The red light indicates a vessel's port (left) side; the green indicates a vessel's starboard (right) side.

Why is port red and starboard green?

Because the green light is on the starboard(right) side of your boat, the red is the port(left). So, if you see them both then there is a chance you are looking down the nose of a boat. What is the first thing you do? Well, it is the preferred method to pass on the port (left) side.

What side of a buoy do you pass?

Aids to navigation on state waters use red and green buoys to mark channel limits, gener- ally in pairs. Your boat should pass between the red buoy and its companion green buoy. LIGHTED BUOY: Even number, increasing toward head of navigation, leave to starboard (right) when proceeding upstream.

Which side of a boat has a red light at night?

Powerboat A: When only a red light is visible, you are approaching the port side of a sailboat. Give way to your starboard side. Powerboat B: When white and green lights are visible, you are approaching the starboard side of a powerboat.

What does red Right Return mean in boating?

“Red, Right, Returning” You may have heard the phrase, “Red, Right, Returning.” This expression refers to the fact that when returning (entering a channel from the open sea or proceeding upstream), a boater must keep the red Aids on the right (starboard) side of the boat.

What does a single white light on a boat tell you?

What Does a White Light Indicate? If only a white light is visible, you may be approaching another craft from behind. You are the give-way-craft and must take early and substantial action to steer well clear by altering your course and passing at a safe distance on the starboard (right) or port (left) side.

What lights should be on a boat at night?

The required lights are: Red and green sidelights visible from a distance of at least one mile away on a dark, clear night. An all-round white light or both a masthead light and a sternlight. These lights must be visible from a distance of at least two miles away on a dark, clear night.

What is the white light on the back of a boat called?

A stern light, which is a white light at the rear of the boat. The stern light needs to be visible across 135 degrees and from two miles away. When the masthead light and the stern light are combined, that makes up 360 degrees.

What do blue lights mean on the water?

Posted on 3/17/2021. A blue engine coolant temperature light only indicates one thing: that your coolant, or antifreeze, is too cold.

What do blue buoys mean?

Mooring Buoys

These are white with a blue horizontal band, usually placed in marinas and other areas where vessels are allowed to anchor. You may tie up to these buoys; they are the only ones where you can do that. Water buoy markers give you a clear and accurate picture of the waters you're traveling.

What color are police boat lights?

Search and rescue vessels, police boats, and government vessels will display blue flashing lights when they're responding to an emergency situation. Always slow down, keep well clear, and allow boats displaying flashing blue lights to pass you.

Why does Mississippi River have locks?

Louis, Missouri, the Mississippi has a fall of about 420 feet. The purpose of the locks and dams is to create a series of steps which river tows and other boats either climb or descend as they travel upstream or downstream.

What are locks on a lake?

A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways.

Do you have to pay to use canal locks?

2 answers. Hi Harry, It's free to pass through by boat, and there's a lock keeper on duty to help if necessary.