Harvard's sailing team finally had a week of practice under its belt, and the results were obvious as the Crimson grabbed firsts in two major regattas the past two days to establish itself as one of the top teams in New England.

Harvard ran away with the Oberg Trophy, symbolic of the Greater Boston championships, yesterday in a six-school field at M. I. T. All three Crimson skippers won their divisions to give Harvard a mere 33 points to 44 for the Engineers and 52 for B. U.

Joe Worth with Doug Libby as crew turned in four firsts and two seconds in the six Division "C" races, but just as impressive were Abbott Reeve with Phil DeNormandie and Charlie Koch with George Putnam in Division "A" and "B" respectively. Both Reeve and Koch took three firsts and never finished below third.

Harvard won the Oberg Trophy, offered twice a year, last fall, but has not won it in the spring for several years.

The Crimson won another significant trophy on Sunday in the five-team field in a M. I. T. Invitational for the Geiger Trophy, a four divisional event using different style boats.

In the division for Finns, a single-handed boat, the Crimson's Robbie Doyle, the 1970 New England single-handed sailing champion, took a second to M. I. T.'s Pete Nesbeda, while in the division for C, C. T. s, Joe Worth with John Bowers and David Little also fell second to M. I. T.

But in the customary dinghy competition, Reeve with Libby and Koch with Putnam won divisions "A" and "B" to bring Harvard's point total to 49 to 69 for M. I. T. and 83 for Coast Guard.

In other sailing action, Doug Allen and DeNormandie skippered the Crimson to a second-place in a small invitational at M. I. T. Saturday.