Trainer

 

The trainers in Patrician IV seems to be bound to a town.

 

 

Trade - L├╝beck

Repair - Oslo

Combat - Reval

Navigation - Edinburgh

 

They appear on a regular basis - all 4 days! You must not stay all 4 days in town view. Switch from the sea map back to the town after 4 days and you will find the trainer in the tavern.