Sperry Marine VISIONMASTER FT ECDIS-E, Руководство пользователя

Страница: 90 / 425

Basic Operation of ECDIS-E ECDIS-E User Guide
3-46 65934012
background colour (see Alarm Status Indicator) if the items are defined as
dangers. If the Dangers list defines the items only as cautions the Alarm
Status Indicator will not raise an alarm unless the
Alarms On Cautions
check box has been ticked in the Dangers sub menu.
WARNING:
THE ABILITY TO DETECT CHART DANGERS IS RELIANT ON THE
QUALITY OF THE DATA CONTAINED IN THE LOADED AND ENABLED
CHART DATABASE AND THE QUALITY OF THE VECTOR CHART
COVERAGE. THE OPERATOR NEEDS TO BE AWARE OF THE QUALITY
OF THE DATABASE PRESENTLY LOADED AND ENABLED FOR THE
OPERATING AREA, AND ALWAYS KEEP THE DATABASE UPDATED. IN
ADDITION THE OPERATOR MUST ALWAYS SET THE LOOK AHEAD
RANGE (TIME OR DISTANCE) TO AN APPROPRIATE VALUE
CONSIDERING OPERATIONAL PARAMETERS SUCH AS SHIP'S SPEED,
STOPPING DISTANCE AND GENERAL ABILITY TO MANOEUVRE, SEE
CHART DANGERS. IN ADDITION TO THE OWN SHIP BASED SAFETY
CHECKING THE OPERATOR SHOULD REVIEW THE DANGERS LIST
PROVIDED ON THE DANGERS TAB OF THE MONITOR ROUTE MENU
WHENEVER A NEW ROUTE IS LOADED, AND PERIODICALLY DURING
THE ROUTE WHEN PROGRESSING TO NEW LEGS, SEE MONITOR
ROUTE - DANGERS THE ROUTE-BASED REGION CHECKED USES THE
XTD ALARM LIMIT WHICH IS TYPICALLY MUCH WIDER THAN THE
OWNSHIP SAFETY REGION, AND THEREFORE CAN INDICATE THE
AVAILABLE CORRIDOR FOR SAFE DEVIATION FROM THE ROUTE ON
EITHER SIDE OF THE TRACK LINE.
IT IS PARTICULARLY IMPORTANT THAT THE OPERATOR BE AWARE
THAT:
1. THE OWNSHIP BASED SAFETY CHECKING IS THE ONLY
SAFETY CHECKING PROVIDED WHEN MAKING A DEVIATION ON
A TEMPORARY ROUTE. THE TEMP ROUTE DOES NOT APPLY A
SAFETY CHECKING REGION BASED ON THE XTE LIMIT AS THE
SAVED/NAMED ROUTE DOES. THE DANGERS LIST PROVIDED
ON THE ROUTE MONITOR 'DANGERS' TAB ARE FOR THE
PERMANENT ROUTE ONLY.
2. SAFETY CHECKING IS DONE PERIODICALLY, WITH AS MUCH
AS 30 SECONDS BETWEEN SEARCHES. THE OPERATOR
SHOULD THEREFORE BE AWARE THAT THERE MIGHT BE A
SLIGHT DELAY IN UPDATING THE LIST OF CHART DANGERS TO
REFLECT THE CURRENT CONDITIONS.