McInnis found the back of the net from 40 yards out on the only goal of the game for the host Buccaneers, who are off to their first 3-0 start in 12 years and bested the visiting Bears (3-1-1) after posting just two ties (1-1 both in 1980 and 2004) and 20 setbacks in the series between the two schools that started in 1976.
After Coast Guard senior keeper Carlos Gonzalez (0-1) came out to play a deflection outside his penalty area, McInnis was able to pick up the loose ball and loft a shot for his first goal of the season, and Massachusetts Maritime freshman Joe Cohen made that stand up in goal with six saves to earn his second victory and first career shutout.
Coast Guard suffered its first loss of the season despite outshooting the Bucs 15-3.
Senior Matt Epperly's shot with just over three minutes left from point blank range was saved by Cohen. Joe Bodzewski also had a great shot in the 64th minute, but Daniel Riley, the Bucs senior back made a defensive save.
"It was a tough loss for us as we certainly had all the play, but gave up a counter attack goal and never equalized," said Coast Guard head coach Chris Parsons. "Give Mass. Maritime credit they worked very hard and never gve up. We will regroup for Babson on Saturday."
Coast Guard will open conference play on Saturday at home at noon against New England Women's and Men's Athletic Conference (NEWMAC) preseason favorite Babson, winners of at least a share of five straight regular season conference championships.