SC 16 of 2010
Execution means execution in accordance with passage plan
Factors for executing and deviating from plan
.1 the reliability and condition of the vessel’s navigational equipment;
.2 estimated times of arrival at critical points for tide heights and flow;
.3 meteorological conditions, (particularly in areas known to be affected by frequent
periods of low visibility) as well as weather routeing information;
.4 daytime versus night-time passing of danger points, and any effect this may have on
position fixing accuracy; and
.5 traffic conditions, especially at navigational focal points.