Pitted against each other for the first time, Charlie Hutter and Bill Kendall, Olympic swimming champions from the United States and Australia, and fellow members of Hal Ulen's unbeaten Varsity, will swim an exhibition race as a feature of the Water Carnival to be held tomorrow night at the Indoor Athletic Building.

The first of its kind since 1935, the Carnival will include five championship races, fancy dives by Russ Greenhood and others, events for sons of the Faculty, a House Championship Medley Relay, and exhibition swimming and diving by Patricia Gray, nine-year-old mascot of the Posse School A.A.U. Team.

Kendall and Hutter will stage their battle in the 150-yard free style swim. Neither of the boys has raced this distance officially before; but Hutter holds the Harvard and the Pool records for the 100-yard free style at 52 seconds flat, and last year Bill Kendall did the same distance in 53.8 seconds. The world's record in the 150-yard event is 1:22.5.

Races will be held in the 500-yard free style for Women's National A.A.U. Senior Indoor Championship, and in the 100-yard free style for Women's New England A.A.U. Championship. Doris Brennan of the Olneyville Boys' Club Auxiliary, present holder of the 500-yard title, will defend it against swimmers from New York and Worcester.

Championships for men will include the 150-yard medley relay (National), the 400-yard free style relay (New England), and the 500-yard free style (Massachusetts). Varsity swimmers will enter all three events.

Outside organizations taking part in the Carnival are the Olneyville Boys' Club and Auxiliary, the Boston Boys' Club, the Roxbury Boys' Club, the Worcester Women's Swimming Association, the Somerville Y Aquatic Club, the Posse School A.A.U. team, the Whitin Community Association, the Greenwood Memorial Club, and the Brookline Women's Swimming Association.

Benefits of the Carnival will go to the Olympic Swimming Fund to help send swimmers to Japan in 1940. The admission price is 55 cents for all, including members of the team.