3. Repeater mounted on bulkhead in Master’s room, or at the after
steering station.
Special stands or fixtures can be supplied if necessary.
A metal “non-reflection” cover is supplied which can be fitted to
either the bridge or the after steering repeaters. The cover has
adjustable doors and a hood. Its object is to exclude all light from
the top glass of the repeater except at the lubber’s line. No light
will be reflected into the eyes of the helmsman. The doors can be
closed until a very small sector of the repeater dial appears at
the lubber’s line. Experience has proved that it is easier to watch
and concentrate when only a small portion of the dial is visible. A
magnifying glass can be used in conjunction with the cover so that the
repeater indication can be read at a distance.
[Illustration: Bearing Repeater with Sperry Azimuth Circle.]
The bridge and after steering repeaters are mounted on adjustable
brackets. The position of the repeater can be changed so as to allow a
full face view of the dial from almost any angle.
The bearing repeater is of great aid to the navigator. The repeater
is mounted within the stand and, of course, shows the exact reading
of the Master Compass. In taking a bearing on a distant object or
a sun azimuth it is not necessary to first set the “dumb” compass
to correspond with the main compass. A constant true indication is
afforded.
Installation of the bearing repeater can be made in such a position on
the upper bridge so that it may be used for steering from that position
as well as for taking bearings. A special pelorus stand cover can be
supplied with windows to allow steering with the cover on, so as to
protect the repeater from spray and the weather.
[Illustration: The light unsinkable Kayak of the Eskimo.]
[Illustration: Figure 15.]
[Illustration: Figure 16.]
[Illustration: An Ore-steamer of the American Great Lakes.]
[Illustration: Figure 17.]
[Illustration: Figure 18.]
[Illustration: The great painted War-Canoe of Alaskan Indians.]
An improved design of azimuth circle is furnished which fits directly
over the top of the repeater. Figures 24 and 26, on page 30, show
the azimuth circle and bearing repeater in use, taking a bearing on
a distant object, and on the sun respectively. This azimuth circle
is so constructed as to bring the object, the spirit level and dial
within the field of vision concurrently. The bearing can be taken with
great accuracy. There is no possibility of the Master Compass changing
its position while the pelorus is in use. Such an occurrence is not
uncommon when using the ordinary pelorus or “dummy” compass.
An additional graduated ring, Figure 25, is supplied for placing under
the azimuth circle so that in case the Gyro-Compass is not operating
such, for instance, as when the ship is at anchor, the pelorus can
still be used as a “dumb” compass. The main compass setting is made
upon the ring, and the azimuth circle used in the usual manner.
The bearing repeater can be furnished with any one of three kinds of
azimuth circles. The Ritchie circle is usually supplied. The purchaser
also has the option of choosing either the Sperry circle or the Kelvin
Azimuth Mirror.