Drift Analysis - NAVIS NavDP 4000 Series Operation Manual

System Functions
– thrust limits;
– TAL mode.
Rigdon Test
Ship heading
Wind direction
Wave direction
Current direction
Bow#F THR
PORT L-Drv
Center Prop
TAL mode
W
Figure 10.70: Example of the Capability Plot Printout (Hypothetic Mode, TRUE view)

10.9 Drift Analysis

Drift Analysis is performed to predict the vessel's hypothetic drift for set failures and environmental disturbances
(waves, wind and current).
The Drift Analysis is closely connected to the Capability Analysis in Hypot mode (see Section 10.8, page 212)
because they share the same system configurations and environmental disturbances set by the operator. Drift Analysis is
performed in HYPOT mode.
Use Drift Analysis to predict the vessel's hypothetic drift in different set conditions by:
Doc. 000.JDP-10000-OME, rev.3.3.13/"2102.$–17A-Advanced"
Capability Diagram (Hypothetic mode)
317.4°
139.7° REL / 97.1° True
139.8° REL / 97.1° True
32.6° REL / 350.0° True
Thrusters limits
100%
100%
off
High BIAS
Wind speed
Current
N
40 m/s
30 m/s
20 m/s
10 m/s
S
05.03.17 16:12:13
Wave height 1.6 m
Current speed 1.8 m/s
Bow#A THR 100%
STBD L-Drv 100%
E
Wave
Wind
218