Sports Illustrated used to have articles about boat racing. Here is a page where they posted the winners of the 1954 Nationals -both for APBA and NOA.
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November 29, 1954
American Power Boat Associations National Champions



Outboard Division
CLASS M OUTBOARD HYDRO: R. Frawley, Sept. 25-27, Pasco, Wash.
CLASS A OUTBOARD HYDRO: Orlando Torigiani, Sept. 25-27 at Pasco
CLASS B OUTBOARD HYDRO: W. L. Tenney, Sept. 25-27 at Pasco
CLASS C OUTBOARD HYDRO: W. L. Tenney, Sept. 25-27 at Pasco
CLASS C SERVICE HYDRO: O. Dupuis, Sept. 25-27 at Pasco
CLASS C RACING RUNABOUT: W. L. Tenney, Sept. 25-27 at Pasco
CLASS C SERVICE RUNABOUT: W. Rankin, Sept. 25-27 at Pasco
CLASS F HYDRO: P. J. Owens, Sept. 25-27 at Pasco
CLASS F RACING RUNABOUT: W. Siemsen, Sept. 18, Vallejo, Calif.

Stock Outboard Division
CLASS JU RUNABOUT: Michael Helm, Aug. 28-30 at De Pere, Wis.
CLASS AU RUNABOUT: Richard O'Dea, Aug. 28-30 at De Pere, Wis.
CLASS BU RUNABOUT: Eddie West, Aug. 28-30 at De Pere, Wis.
CLASS CU RUNABOUT: Ronald Loomis, Aug. 28-30 at De Pere, Wis.
CLASS DU RUNABOUT: John Jackson, Aug. 28-30 at De Pere, Wis.
CLASS A STOCK HYDRO: D. Baldaccini, Aug. 28-30 at De Pere, Wis.
CLASS B STOCK HYDRO: Bob Parish, Aug. 28-30 at De Pere, Wis.
CLASS D STOCK HYDRO: F. Huebner, Aug. 28-30 at De Pere, Wis.