Recommendation by Marine-Pilots.com
AIS services are offered by, for example:
The #ESAIL #microsatellite for tracking ships worldwide was launched. This is the first maritime satellite of its kind produced and assembled in Luxembourg. Hear from #Luxembourg Minister of the Economy Franz Fayot about this pioneering #ESA partnership project developed with #LuxSpace and #Exactearth.
Using pictures and sketches, this video finally explains the difference between gross tonnage (GRT) and net tonnage (NRT); the ship spaces that are included/excluded in their calculation; and the importance of these terms to ship owners.
Contents of this video will benefit mariners preparing for exams (written and oral examinations).