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.
A handy and simple tool to determine in a minimum time what is really needed as tug assistance, is the Bollard Pull Calculator which calculates in an approximate way the total required tug power for ships in various conditions of wind and current. This tool can be loaded as an app on the smart phone.