2 Type 150/400 Autopilot System: Installation Guide
Step 1
*Note: The Raymarine GyroPlus yaw sensor measures the boat’s yaw (its rate of turn). The autopilo t
system uses this information to enhance course keeping in adverse weather and sailing condition s (such
as sailing downwind in following seas). The Type 150G and Type 400G course computers contain a
built-in GyroPlus yaw sensor as standard. The Type 150 and Type 400 course computers do not contain
a built-in GyroPlus, but have the option of an external GyroPlus or dealer-fitted internal GyroPlu s.
CAUTION:
Before installing the course computer and drive unit, check that
they are the correct voltage for your boats supply.

Compass

The compass is the direction sensor for the autopilot system. It
provides the course computer with precise information about the
boats heading.
Raymarine supplies a standard fluxgate compass for the autopilot
system.

Rudder position sensor

The rudder position sensor (or rudder reference transducer) provides
the course computer with the exact position of the boats rudder.
Course computer versions
Version Supply voltage Drive unit compatibility Built-in
GyroPlus*?
Type 150 12 V All Raymarine Type 1 12 V drives and pumps
(including 12 V Constant Running pump). No
Type 150G 12 V All Raymarine Type 1 12 V drives and pumps
(including 12 V Constant Running pump). Yes
Type 400 12 V or 24 V
All Raymarine 12 V and 24 V Type 1, Type 2 and
Type 3 drives and pumps. Drive voltage must be
matched to boats supply voltage.
No
Type 400G 12 V or 24 V
All Raymarine 12 V and 24 V Type 1, Type 2 and
Type 3 drives and pumps. Drive voltage must be
matched to boats supply voltage.
Yes
ÍFor course computer installation information, see page 9
For course computer specifications, see page 45
Í For more information, see page 17
81173_3.book Page 2 Thursday, June 7, 2001 11:51 AM