The Harvard swimming armada, combining the record-shattering performance of freshman Peter Tetlow with another overpowering team effort, shelled the Naval Academy, 80-33, Saturday afternoon in the Middies' own harbor.

In what closely resembled a Harvard intrasquad meet, Navy could manage to win only the opening medley relay and the 50-yd. freestyle. Everything else belonged to Harvard and the Crimson claimed 11 first place finishes.

The effort of Tetlow highlighted the barrage, as he covered the 1000-yd. freestyle distance in a very fast 9:35.98. His time lowered Rich Baughman's University record by seven seconds. Leading all the way in the race, he finished an amazing 21 seconds ahead of Harvard co-captain Fred Mitchell.

Sophomore Hess Yntema turned in another stellar performance, establishing new Navy pool records in both the 500-yd. freestyle and the 200-yd. individual medley Yatema did not swim his specialty, the 200-yd. butterfly, which was won by Crimson sophomore John Craig. Craig also swam on the victorious freestyle relay team.

Freshman Ted Fullerton captured the 200-yd. breast stroke, breezing to a four-second victory. Another Crimson freshman, Neil Martin, won the 200-yd. freestyle and placed third to Fullerton in the breast stroke.

Tom Wolf continued his domination of the 200-yd. backstroke, finishing four seconds ahead of the versatile Tetlow. Freshman freestyler George Keim was touched out in the 50-yd. sprint, but rebounded to cop the 100-yd. event.

Sophomore Dave English showed signs of rounding into form on the diving boards, winning both the one-meter and three-meter competitions for his first victories of the season.

As he did in the Crimson's rout of Johns Hopkins on Friday, first year Crimson Coach Ray Essick experimented with his lineup throughout the meet. He explained yesterday, "We're trying to gather as much data as we can on these swimmers to find out where they can make contributions."

Sink Navy

In Saturday's sinking of Navy, Hess Yntema did not swim the 200-yd. butterfly, Junior Dave Brumwell did not swim the 200-yd. breast stroke, Peter Tetlow was not used in the 500-yd. freestyle, and Fred Mitchell did not swim in the 200-yd. free. When these swimmers participate in their specialties, Harvard should be even more formidable.

Coach Essick was elated at the weekend showing. "This was as good an early season performance as I've seen," he said yesterday. "The Dartmouth meet (last week) was not an indication of our strength because we swam so cautiously. This weekend there was no pressure so I turned everybody loose and let them swim hard. The results speak for themselves."