These are the most important rules for almost all Dutch inland waterways according to the INLAND WATER POLICE REGULATIONS; (BPR)

NOTE:
A large ship is a ship longer than 20m or a passenger ship, a fishing vessel, tugboat or  ferry.  The order of the rules is important! A large ship that does not sail along his starboard side of te water must (theoretical) give way to a small ship that sails along his starboard shore!
 A sailing ship that also uses the engine in gear the same time is seen as a motorship