User Chart Planning; Positioning; Direct Positioning Sensors; Dead Reckoning Equipment - Furuno FEA-2107 Operator's Manual

2.2.4

User chart planning

User chart planning consists of the following steps:
1. Create user navigation charts
2. Process chart alarms based on symbols, lines and areas of user chart
2.3

Positioning

Positioning means using all available methods available to calculate and keep ship's position up-to-date during a
voyage.
The calculation of ship's position is based on available navigation sensors. The system integrates valid information
from different sensors and uses the Kalman filter technology for final position calculation.
Direct
positioning
sensors
Positioning
Manual
correction
2.3.1

Direct positioning sensors

Radio navigation equipment:
Decca navigator
Loran-C navigator
SYLEDIS navigator
Local position-fixing systems
2.3.2

Dead reckoning equipment

Ship's heading measurement devices:
Gyrocompass
Magnetic compass
GPS gyrocompass
Dead reck.
equipment
Satellite navigation systems:
GPS navigator
GPS navigator with a differential correction, DGPS
Speed measuring devices:
Single-axis speed logs
Dual-axis speed logs
Radionavigation equipment
Satellite navigation equipment
2. Navigation Tasks
2-3