- GPS/GLONASS uncorrected
- Differential corrections via SBAS
- Differential corrections via UHF
- Differential corrections via 3G / 4G
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).
Considering that collision accidents happen sometimes, it is necessary to predict the collision risk to ensure navigation safety. With the information construction in maritime and the popularity of automatic identification system applications, it is more convenient to obtain ship navigation dynamics.