Jeppesen fishsafe, Operation Manual

28

Operations Manual

In the case of point objects, the cursor is directly on top of the object (see Fig.

7.2). For line objects the cursor is placed on the line at the nearest intersect to

the vessel, within the keyhole.

The Hazard Status Bar consists of five sections (from left to right):

1. Hazard number and number of hazards, i.e. in the left screen of the

Fig. 7.2, #1/4 means hazard one of four displayed.

2. Hazard Description Field is a Short Text Description of the hazard(s).

3. Range and Bearing of the hazard from the vessel - This is displayed

when the object lies within the keyhole guardian zone and corresponds

to a Green Alarm or worse. The object is highlighted by the on-screen

cursor.

In the case of line objects the values of range and bearing correspond

to the closest point of the object within the keyhole.

4. The time displayed is the expected time for the vessel to enter the

hazard boundary or safety zone boundary. It is only displayed when

the hazard boundary or safety zone boundary is within the forward

sector. It corresponds to a Yellow alarm. The time displayed  is normally

an initial value of 5 minutes decreasing uniformly down to zero as the

vessel crosses the boundary at which point the alarm turns Red.

The time is calculated by the formula Distance divided by Speed where:

♦

distance is measured from the vessel to the closest edge of

the safety zone or hazard boundary which is within the For-

ward Sector. The time is only displayed when edge of the

safety zone or hazard boundary is within the Forward Sector.

♦

speed is the speed of the vessel over the ground i.e. SOG

as displayed on the FishSAFE unit itself.

5. Group Warning based on the following table:

Screen message

Displayed condition when vessel is

Multiple Hazards!

: within one or more than one Safety Zone and within one or more than one Hazard Area.

Inside Safety Zones!

: within more than one Safety Zone.

Inside Safety Zone

: within only one Safety Zone.

Near Safety Zone

: approaching one or more than one Safety Zone and none of the above apply.

Inside Hazard Area

: within a Hazard Area and none of the above apply.

Near Hazard Area

: approaching a Hazard Area and none of the above apply.

Caution

: when none of the above apply.

This warning field shows the worst warning for the group of all detected

hazards at any time. In the example shown in Fig. 7.2, there are four

hazards all of the same severity. If however, one of the hazards comes

within the variable alarm zone, then the Yellow “Approaching Hazards”

Traffic Light is displayed and the Group warning goes to Yellow status,

as shown below. The Highest Priority message (i.e. that nearest the

top of this list) is continuously displayed in this fifth field but the other

fields are coloured based on the hazard that they are currently

displaying.