The Patrician 2

The Patrician 2 cheat codes: 
More Cash:
Hold [Capslock] and [$]

Unlimited money:
At the start of the game, begin with two ships instead of one.
Hand over both ships to pirates (which are located in taverns
in all cities). The money they generate for you will enable you
to hand out mass amounts of loans from the loan officer's house.
Any time you get money back, hand out another loan. Your cash flow
will grow quickly. To generate more money, build more ships, and
keep giving them to pirates . They will make mass amounts of money
very quickly.