"الملف 3/30 تجهيزات الزورق البخاري" [و‎‎٣‎٦] (٦١٤/٥٩)

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Separate pages can be had on application.
CODE Y
I
Grid Steering Compasses
Steering by Parallelism
There is a growing tendency amongst owners of motor craft
to use "Parallelism" or the "Grid" method of steering,
and for those unfamiliar with the ' 'parallel'' compass the
following notes will be useful.
The compass bowl (A) is the same as used for an ordinary
liquid compass. The magnet system supports eight radial
damping wires (B), spaced 45 degrees apart. A small
compass card (C), marked in points and degrees (0—360
degrees) is fixed on the wires. The wire running parallel
to the magnets (D) is painted red. The lubber line (E) runs
across the diameter of the compass underneath the window
in the fore and aft position.
To steer a given course, clamp the grid ring so that the
required course is registered by the lubber line. Then
turn the craft until the red "N " and "S " wires are parallel
to the grid wires and the former points to ' 'N' 1 on the grid
ring.
The vessel will then be heading in the desired direction,
and the course is steered, not by keeping a required degree
against the lubber line, but simply by keeping the grid wires
parallel.
The compass is simple to use, and is generally considered
very satisfactory. Its design allows it to be mounted (within
reasonable limits) in positions other than directly in front of
the helmsman without the effect of parallax becoming serious.
Solent
The ' "Solent'' is designed for motor yachts, and the steering
is arranged by the 1 'grid'' system which is fully explained
above.
SPECIFICATION
Brass divided binnacle with removable top, fitted with hinged
front glass. Electric light fitting with Rheostat light control.
Deat-beat compass with small diam. filament card to i-points.
*Finish: Admiralty grey. Polished brass or chromium plated.
Please state.
Complete—
Cat. Bowl Base Height Weight
No. Code diam. diam. overall Net Gross
88905 AFUTL 6i in. 10i in. 8i in. 15 1b. 271b.
Compass only—
89192 BDAXP — 10 1b. 15 1b.
The diam. of the base of this binnacle can be reduced by
approximately 1 in. by having the flange turned in. Add "F"
to code.
Colne
A similar type of compass and binnacle to the ' 'Solent'' but
smaller in all dimensions. Very suitable for small motor
cruisers.
SPECIFICATION
Brass divided binnacle with removable top (if preferred this
binnacle can be supplied made up in one piece with the top
fixed) and hinged front glass. Electric light fitting. Dead-beat
compass with small diam. filament card to i points.
*Finish; Admiralty grey, polished brass or chromium plated.
Please state.
Complete (2-piece binnacle, lift-off top).
Cat. Bowl Base Height
No. Code diam. diam. overall
89335 BJIKR 4 in. Sin. 8 in.
Complete (1-piece binnacle, fixed top).
89336 BJIVB
Compass only
89337 BJIXD „ 7 lb. 13 lb.
* Binnacles listed will be supplied finished spray-painted
Admiralty grey unless ordered otherwise.
Weight
Net Gross
11 lb. 191b.
SOLENT
COLNE
COMPASSES FOR MOTOR YACHTS
Page Forty-Five