It depends on the size of the props, and how much torque they can exert on the stern- - - -the bigger the prop, the more side thrust there will be. Container ships with huge single screws have to run computerized steering correction to run in a straight line.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!