Vessel Navigation Status
NavStat: 0 = under way using engine
NavStat: 1 = at anchor
NavStat: 3 = restricted maneuverability
NavStat: 5 = moored
NavStat: 7 = engaged in fishing
NavStat: 8 = under way sailing
NavStat: 15 = undefined (default)
Other

- Clustered Vessels