Figure 2-14. Steering control console.
The second masthead light, also a 225° white light,
is mounted on the mainmast or the forepart of any ship
50 meters in length or longer, but at least 4.5 meters
higher than the masthead light.
Port and starboard side lights are 112 1/2° lights
(fig. 2-16, view B) on the respective sides of the ship.
They show red to port, green to starboard, and are
invisible across the bow. The fixtures are spraytight, and
each is equipped with an inboard screen arranged to
throw the light from right ahead to 22.5° abaft the beam,
port and starboard.
The stern light is a 135° white light (view C) located
on the stem of the vessel. It is a watertight fixture and is
equipped with an inboard screen to show an unbroken
light over an arc of the horizon of 135°, that is, from
dead astern to 67.5° on each side of the ship.
The supply, control, and telltale panel for the
running lights is a non-watertight, sheet steel cabinet
designed for bulkhead mounting (fig. 2-17). This panel
is located in the pilothouse. It affords an audible and
visible signal when the primary filament burns out in
any one of the five running lights. At the same time, the
panel switches automatically to the secondary filament
so that the defective light remains in service. A master
control switch with an indicator light is also located on
the running light supply, control, and telltale panel.
Signal lights installed on combatant ships usually
include (1) aircraft warning lights, (2) blinker lights, (3)
breakdown and man-overboard lights, (4) steering light,
(5) stem light (blue), (6) wake light, and (7) speed