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1. Level with the Earth's Horizontal Plane – Although the SSC300 can be calibrated in the vessel
to compensate for pitch and roll installation-offset, it is best to mount the compass as level as
possible to maximize its pitch and roll operational range.
2. Oriented with Arrow Pointing to Bow Parallel to Vessel Centerline – Although the SSC300
can be calibrated in the vessel to compensate for heading installation-offset, it is best to mount
the compass pointed towards the bow and parallel to the vessel centerline. The SSC300 can
be mounted in other orientations, although this requires additional configuration steps; please
refer to Section 2.3 on page 3 for details.
3. Near the Center of Gravity (CG) of the Vessel – The compass experiences the least amount
of movement when located at the CG, which allows the most accurate readings. This is similar
to a traditional card/needle compass, where the farther the compass is from the CG, then the
more the fluid sloshes around, making accurate readings more difficult.
4. Away from Structures Containing Ferrous Metals – The earth's lines of magnetic flux tend to
become distorted in the vicinity of ferrous metals, which can potentially cause errors in the
compass's indicated heading. The SSC300 can be calibrated to compensate for these errors,
but it is still best to minimize the errors by placing the compass as far away from ferrous
metals as is practical.
5. Away from Magnetic Field Sources – Power or ignition cables, electric motors, and other
electronic equipment can create magnetic fields. The earth's lines of magnetic flux tend to
become distorted in the vicinity of magnetic field sources, which can potentially cause errors
in the compass's indicated heading. The magnetic fields tend to come and go as power is
switched on and off, which makes compensation impractical. Therefore, you should try to
mount the compass as far away as possible from these magnetic field sources (doubling the
distance between the magnetic field source and the compass will reduce the field strength by
a factor of approximately 8). Also, always observe any "compass-safe distance" markings on
other electronic equipment.
6. Minimal Vibration – Although the SSC300 is more tolerant of vibration than a fluxgate
compass, it is best to mount the compass in a location free of vibration as opposed to a
location with vibration.
7. Limited Water Exposure – The SSC300 has an IP67 rating which means the compass is able
to withstand nozzle spray and is protected against water immersion up to 1m for up to 30
minutes. Please avoid areas which would result in the SSC300 being immersed in water
which exceeds these depths or times.
2.3 Mounting the SSC300
The Maretron SSC300 compass can be mounted to a horizontal surface such as a floor or deck
(Section 2.3.1) or it can be mounted to a vertical surface such as a wall or bulkhead (Section
2.3.2).
2.3.1 Mounting the SSC300 to a Horizontal Surface
Mounting the SSC300 compass to a horizontal surface requires that the provided mounting
brackets be fastened to the bottom of the SSC300 using the provided brass flat head screws.
Once the mounting brackets are securely fastened to the bottom of the SSC300, attach the
SSC300 securely to the vessel using the included brass mounting screws or other non-ferrous
Revision 1.0
Page 3
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