Raymarine RL80CRC PLUS Marpa Set Up Parameters, Target Vector and Predicted Position, Safe Zone

MARPA Set Up Parameters

7-14 hsb2 PLUS Series Color LCD Display

7.5 MARPA Set Up Parameters

The MARPA set up menu provides options to specify the target vectors, safe zone and target history display.

The following table lists the MARPA Set Up parameters and their options, shows the factory default setting, and provides a space for you to make a note of your new default setting. Each parameter is described in the following subsections.

Table 7-5:	MARPA Set Up Parameters
Parameter		Options	Factory Default	New Default
TARGET VECTOR		TRUE	RELATIVE
		RELATIVE
VECTOR LENGTH		30 SECS, 1 MIN, 3 MINS,	3 MINS
		6 MINS, 12 MINS
OWN VESSEL		0.1 nm, 0.2 nm, 0.5 nm,	0.5 nm
SAFE ZONE		1.0 nm, 2.0 nm
TIME TO SAFE		1 MIN, 3 MINS, 6 MINS,	3 MINS
ZONE		12 MINS, 24 MINS
SAFE ZONE RING		OFF, ON	ON
TARGET HISTORY		OFF, 1 MINS, 2 MINS,	OFF
		4 MINS

Target Vector and Predicted Position

The target vector can be True or Relative. True indicates the target’s true course and speed over ground. If selected, the vessel’s vector is also shown. A Relative vector indicates the target’s course and speed relative to your vessel. The length of the vector is determined by the target predicted position after a set time interval.

Safe Zone

The safe zone options are used to set the dangerous target alarm limits.

The safe zone is a ring, centred on your vessel, within which a target is considered dangerous. A target can also be considered dangerous when it is within a specified time of the safe zone. You can switch the safe zone on/off. When the zone is on and a target is acquired, the safe zone ring is displayed.

Target History

Target history can be set to plot the targets’ previous position at specified intervals. The four most recent position points are displayed. If True target vectors are selected, then the four most recent vessel position points are also displayed.