Introduction, General
REFLECTA/5
Page A4
Mounting & Operations Manual
General
Magnetic compasses have to be installed in a sufficient distance to any magnetic iron as well as to the different
navigational instruments. Therefore the preferred location is the compass bridge. To read the heading at the
helmsman´s position inside the wheelhouse one makes use of a reflection arrangement. This is an optical
arrangement consisting of magnification lenses and mirrors. According to SOLAS regulations the remote
reading has to be independent of electrical means.
The magnetic compass is found within the compass column. It is easy to remove and to replace with another
one. Spare magnetic compasses are obligatory according to SOLAS.
In spite of the distance to any magnetic source a deflecting influence -the deviation- cannot be totally excluded.
For correction of these residual errors the compass has to be equipped with separate correctors.
Installation of magnetic compasses and the requirements for their location are laid down in basic national and
international regulations. These are IMO A.382(X) and SOLAS consolidated Edition, Chapter V, regulation 12.
The technical and design requirements for magnetic compasses are laid down in ISO 25862:2009(E) as well as
in the relevant national documents. REFLECTA/5 fullfills all these regulations for costal navigation.
Technical Data
Compass Binnacle
Card height .......................................................................................................................... 210 - 600 mm
Total height ......................................................................................................................... 510 - 900 mm
Maximum width measured over D-cylinders ................................................................................ 800 mm
Weight of binnacle and compass complete................................................................................ net 30 kg
Material of binnacle column................................................................ seawater resistant light alloy, RFG
Built-in correctors................................................................................................................................... no
Reflector/steering compass type 21
Diameter of directional system ..................................................................................................... 160 mm
Orientations of card printing from below for reflection reading .................................................N below N
Card division ........................................................................................................................................ 1/1°
Magnet ................................................................................................................................................ Ring
Magnetic moment ...............................................................................................................typically 2 Am
2
Damping factor ....................................................................................................................... typically 3.3
Working temperature range............................................................................................. -30°C .... +65°C
Swirl error accroding to ISO 25862:2009(E) ....................................................................................< 1.6°
Friction-/north error according ISO 25862:2009(E)..........................................................................< 0.5°
Half period .......................................................................................................................................13 sec
Tilt freedom of card within compass bowl .......................................................................................+/- 10°
Rolling/pitching tolerance of compass in gimbal suspension ........................................................+/- 180°
Weight................................................................................................................................................10 kg
Reflection arrangement
Type CUTUBE .....................................................................................length 1000 mm to be cut by yard
Type FIXTUBE................................................................................... ready adjusted in length at delivery
Diameter of tube ........................................................................................................................... 125 mm
Material ............................................................................................................................................... PVC
Turning range of mirror head.............................................................................................................. 360°
Swivel range of reflection mirror, black and white .............................................................................. 360°
Alterations / Errors reserved
Cassens & Plath GmbH, Am Lunedeich 131, 27572 Bremerhaven, Germany, Tel. +49 471 483 999 0, Fax +49 471 483 999 10
www.cassens-plath.de
, sales@cassens-plath.de