Tethered Hydroplane Classes and British Records

Naviga A3

NAVIGA International Classes. Current Records

A1 up to 3.5cc     1.2kg    Ex Dia 7.0mm	Rashid Chabibulin	06/08/2016	213.777kph (132.75mph)
A1E Electric        1.2kg    42v Max	Oleksi Smolnikov	29/07/2018	235.602kph (146.31mph)
A2 up to 7.5cc     2.0kg   Ex Dia 8.0mm	Vladislav Subbotin	26/08/1999	218.871kph (135.92mph)
A3 up to 10cc      2.5kg   Ex Dia 10mm	Vladislav Subbotin	05/07/2004	232.259kph (144.23mph)
B1 2.5cc airscrew 0.75kg Ex Dia 5.0mm	Babken Shahazizian	30/07/2017	284.360kph (176.58mph)
B1E airscrew       0.75kg  42v Max	Illia Norkin	18/08/2024	291.2kph (180.83mph)

MPBA 'International' Classes. Current Records

A1	Pete Dirs	13/08/17	122.64mph
A1E	Angela Gullick	30/07/22	136.35mph
A2	Roger James	3/08/03	129.30mph (Set with 6.5cc motor)
A3	Norman Lara	06/07/14	141.70mph
B1	Pete Dirs	15/08/24	155.25mph
B1E	Angela Gullick	11/06/21	120.68mph

Pete Dirs	Roger James	Norman Lara	The late Jim Free

MPBA British Classes. Current Records

Sport 40 E	Martin Broad	20/07/14	111.29 mph
Sport 40 IC	Stuart Falconer	03/09/22	119.75 mph
B1 Sport	Jim Free	28/05/17	128.48 mph
B1E GB			No record established
B	Ron Hankins	19/06/16	124.76 mph
B/S 9lb	Stan Poyser	02/08/98	96.67 mph
A	John Hyder	08/10/00	130.05 mph
A/S	Paul Windross	07/07/13	129.33 mph
B/R	Ron Hankins	03/09/22	139.11 mph
Vintage	Not applicable to this class. Lambert Trophy awarded for the fastest speed recorded each season

Ron Hankins	The late Stan Poyser	Angela Gullick

John Hyder	Paul Windross	Left: Martin Broad

British Classes

A1              1.2kg	Waterscrew up to 3.5cc. Straight fuel.  *All waterscrew classes must run with silencers*
A1E          1.2kg	Electric Max 42V
A2          2.0kg	3.5cc to 7.5cc  Straight fuel
A3            2.5kg	7.5cc to 10cc   Straight fuel
B1            0.75kg	2.5cc airscrew  Straight fuel 5.0mm max exhaust dia
B1E          0.75kg	Electric airscrew, max 42v
B1E GB      0.85kg	Electric airscrew, max 42v
B1 Sport   2.0lbs	£90 limit on motor, 5mm exhaust outlet, commercial propellers. Free fuel
Sport 40    4.0lbs	6.5cc side exhaust 2-stroke. 10cc 4-stroke . Commercial components Free fuel
Sport E      4.0lbs	6 cell 22.5v electric
B Class     8.0lbs	Up to 15cc homebuilt engines.  Free fuel
B/S Class 9.0lbs	Steam powered, all up weight not to exceed 9lbs.
A Class    16.0lbs	Up to 30cc homebuilt engines.  Free fuel
A/S Class 16.0lbs	Steam powered, all up weight not to exceed 16lbs.
B/R            6.0lbs	Commercial engines up to 15cc. Free fuel
Vintage	Waterscrew or Airscrew, pre 1963 boat or design with engine of contemporary date.

Records are correct at 01/01/25. Thanks to Norman Lara.

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