A Mississippi man convicted of sexually assaulting a 15-year-old on a cruise ship traveling from Boston to Bermuda was sentenced to 3 1/2 years in prison, prosecutors said.

Adam Christopher Boyd, 33, of Bay Springs, Mississippi, pleaded guilty in April to a charge of sexual abuse of a minor, records show.

He was sentenced Wednesday in federal court in Boston, The Boston Globe reported.

In a July sentencing memorandum, prosecutors said Boyd assaulted a 15-year-old child while they were both aboard a cruise ship docked in the Bahamas.

Boyd allegedly knew that the victim was underage and under the influence of alcohol.

In a separate filing, Boyd’s attorney, Charles P. McGinty, requested a lesser term of 18 months.

Boyd had no prior criminal convictions and has a “record of hard work and employment,” he said.

Boyd’s lawyer did not immediately respond to the Globe’s request for comment.