Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey.All hotkeys can be changed on the trainer.

Trainer Options:
NumPad1: Change Cash By 5000
NumPad2: Change Prestige By 50
NumPad3: Change Ship HP By 500
NumPad4: Discover All Harbors
NumPad5: Discover All Modifiers
NumPad6: Unlock All Objects

Notes:

Cash: Press hotkey and visit merchant to see it has changed.

Prestigue: Press hotkey and visit tavern to see it has changed.

Ship HP: Press hotkey to change your ship HP.

Unlock [Stuff]: Press hotkey to unlock [stuff].