8
Chapter 3
NIGHT RUNNING
Boats operating between sunset and sunrise ( hours vary
by state), or in conditions of reduced visibility, must use
navigation lights. Night operation, especially during bad
weather and fog can be dangerous. All Rules of the Road
apply at night, but it is best to slow down and stay clear of
all boats regardless of who has the right-of-way.
To see more easily at night, avoid bright lights when
possible. Also, it is helpful to have a passenger keep watch
for other boats, water hazards and navigational aids.
To determine the size, speed and direction of other vessels
at night, you should use the running lights. A green light
indicates starboard side, and a red light indicates port side.
Generally, if you see a green light, you have the right-of-
way. If you see a red light, give way to the other vessel.
BRIDGE CLEARANCE
Be aware that your vessel requires a specified bridge
clearance height. This height is a measured estimate from
the waterline to the top of the highest object usually the
radar arch (powertower), radar or the masthead light
depending on what equipment is installed. The estimated
height can change because of variances in the loaded
condition of the vessel. An easy way to measure bridge
clearance is to have someone place a long straightedge
such as a piece of wood at a 90 degree angle across the
highest point of the boat. Then with a tape rule measure
the distance straight down to the waterline. Take this
measurement with fuel and water tanks 1/2 full and only
1 person besides yourself on board. This will give you a
safe measurement. As your boat is loaded down with
people the bridge clearance will become somewhat lower.
Some bridges are tendered. Know and use the proper
bridge signals when approaching these bridges (see bridge
signals in this chapter). You can also monitor and
communicate on channel 13 of a VHF radio for bridge
information in most domestic locals. Other bridges are
marked with a clearance measurement and you are on
your own. After determining your vessel will clear the
bridge proceed with caution at a safe idle speed. Keep
your eye on vessel traffic at all times in order to react
quickly. Be aware that wind and current conditions near
and under a bridge can effect the boat direction so be
ready to gain headway as needed. Resume a safe speed
once clear of the bridge structure and acknowledgment
of clear visibility.
Use common sense regarding bridge clearance
because bodily injury and property damage could
result if a mishap occurs with a bridge structure.
To Next Page
Loading...
