Steven Rescorla, 58, of Grand Haven, was also put on probation for 18 months and ordered not to drink alcohol and use any controlled substances during that time.
Judge Susan Jonas said he would also be responsible for restitution of costs incurred by his victims not covered by insurance.
Larry Baum and his wife, Barbara Ramoie, were fishing in Lake Michigan, a few hundred yards offshore near Port Sheldon when their 17-foot boat was struck by Rescorla's 36-foot speedboat on Sept. 1, 2013.
Ramoie was thrown from the boat and suffered a head injury. She was rescued from the water by her husband.
Baum said they are both still being treated for their head and back injuries from the crash.
Rescorla was charged with marine safety operating under the influence of alcohol following the crash.
Read the full story in Thursday's print and electronic editions of the Grand Haven Tribune.