May 3

May 3 - May 4

Norm Evans Apple Cup

VINTAGE-INB

Lake Chelan

Chelan, WA

May 3 - May 4

Port Neches Riverfest

OPC

Neches River

Port Neches, TX

May 3 - May 4

Harford County Spring Nationals

INB

Bush River

Edgewood, MD

May 3 - May 4

Spring Lock Haven Regatta

PRO-MOD-SO

Susquehanna River

Lock Haven, PA

May 10

May 10 - May 11

George Grant Memorial Race

OB RR

Trinity River

Hoopa, CA

May 10 - May 11

US Title Series Spring Shootout

PRO

Champions Park Lake

Springfield, OH

May 10 - May 11

Spring Race at Salt Spring

PRO-KPH-MOD-SO-J CLSES

Salt Spring Reservoir

Copperopolis, CA

May 16

May 16 - May 18

Thunder On Cocoa Beach

OS;N

Atlantic Ocean

Cocoa Beach , FL

May 17

May 17 - May 18

Tom Thornton Jr regatta

MOD-SO-J CLSES

Mattanawcook lake

Lincoln, ME

May 17 - May 18

Race the Joe! - St. Maries River...

SE-JRR

St. Joe River

St Maries ID, ID

May 17 - May 18

Phantom race Days

MOD-SO-J CLSES

Phantom Lake

Mukwonago, WI

May 17 - May 18

Buckingham Test & Tune 2025

VINTAGE;N

Clearlake

2850 Eastlake Dr, Kelseyville, CA 95451, CA

May 17

Water Follies Spring Testing

VINTAGE-INB-UNL

Columbia River

Kennewick, WA

May 17 - May 18

Cambridge Classic

SE-INB

Hambrooks Bay

Cambridge , MD

May 17

Regatta

SE

Body of Water

City, ST

May 17

Sprint Boat Test & Tune

SE

Ontario Speedway

Ontario, OR

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Formula 400 Hydroplane

Formula 400 Hydroplane

No class description available.

Formula 400 Hydroplane Specifications

Minimum Length:
Minimum Weight:350 lbs.
Engine:Mercury 25 SS or Mercury 22.0 Powerhead 1970 to date. OMC Powerhead 1970 to date
Fuel:
Approximate Speed:65-70mph

Formula 400 Hydroplane High Point Winners

YearDriver/OwnerRacesPoints

Formula 400 Hydroplane National Champions

YearDriver/Owner

Formula 400 Hydroplane Records

RecordSiteDriver/OwnerSpeed
3 mile/3 laps
APBA
Aug 28, 2010
Dayton, OH
Rick Miller
Rick Miller
61.117
3 mile/4 laps
APBA
Aug 29, 2010
Dayton, OH
Rick Miller
Rick Miller
57.810
5 mile/3 laps
APBA
Jul 3, 1986
Decatur, IL
Barry Viola
Barry Viola
60.559
5 mile/4 laps
APBA
Sep 17, 1978
Yelm, WA
Bob Wartinger
Bob Wartinger
61.350
Kilo
APBA
Dec 5, 1987
Moore Haven, FL
Scott Anderson
Scott Anderson
75.587