British tethered hydroplane records

Tethered Hydroplane Classes and British Records

Naviga A3

NAVIGA International Classes. Current Records

A1 up to 3.5cc Martin Hamilton 20/08/95 120.52 mph

A2 up to 7.5cc Roger James 3/08/03 129.30 mph (Set with 6.5cc motor)

A3 up to 10cc Norman Lara 14/07/98 135.57 mph

B1 2.5cc airscrew Jim Free 10/04/00 154.91 mph

Martin Hamilton Roger James Norman Lara Jim Free

MPBA British Classes. Current Records

Novice Jim Free 12/09/09 102.9 mph

Super Novice Jim Free 29/08/98 111.30 mph

B1R Jim Free 16/04/06 120.60 mph

B John Rose (deceased) 29/05/94 115.91 mph

B/S Stan Poyser 02/08/98 96.67 mph

A John Hyder 08/10/00 130.05 mph

A/S Bob Kirtley 31/07/05 120.79 mph

A/BRL Ron Hankins 13/09/09 122.78 mph

A/BRH New class 2009 No record yet established

A2/E New class 2010 No record yet established

Vintage Not applicable to this class. Lambert Trophy awarded for the fastest speed recorded each season

The late John Rose Stan Poyser John Hyder Bob Kirtley Ron Hankins

British Classes

Novice. Up to 6.5cc standard side exhaust motors with silencer. Commercial Propellers reworked.

Super Novice. 6.5cc rear exhaust motors with tuned or minipipes. Engines reworked using standard parts.

B Class Up to 15cc homebuilt engines.

B/S Class Steam powered, all up weight not to exceed 9lbs.

B1R 2.5cc Airscrew Restricted. Commercial props, price limit on engines.

A Class Up to 30cc homebuilt engines.

A/S Class Steam powered, all up weight not to exceed 16lbs.

A/B Restricted L Commercial engines from 10cc to 30cc. Maximum weight 6lbs. A3 line

A/B Restricted H Commercial engines from 10cc to 30cc. Maximum weight 16lbs. A line

Vintage Waterscrew or Airscrew, pre 1963 boat or design with engine of contemporary date.

A2/E (provisional) Hull to meet A2 class limits, electric powered, batteries not to exceed 23 volts.

Novice Electric Vintage

Commercial engine 'Novice' 15cc from castings 'B' 30cc from bar stock 'A' Poppet valve flash steamer 'A/S'

Records are correct at 01/11/09. Thanks to Norman Lara. Photos Jim Free, OTW and the late Vic Collins

©copyrightOTW2010

A1 up to 3.5cc	Martin Hamilton	20/08/95	120.52 mph
A2 up to 7.5cc	Roger James	3/08/03	129.30 mph (Set with 6.5cc motor)
A3 up to 10cc	Norman Lara	14/07/98	135.57 mph
B1 2.5cc airscrew	Jim Free	10/04/00	154.91 mph

Novice	Jim Free	12/09/09	102.9 mph
Super Novice	Jim Free	29/08/98	111.30 mph
B1R	Jim Free	16/04/06	120.60 mph
B	John Rose (deceased)	29/05/94	115.91 mph
B/S	Stan Poyser	02/08/98	96.67 mph
A	John Hyder	08/10/00	130.05 mph
A/S	Bob Kirtley	31/07/05	120.79 mph
A/BRL	Ron Hankins	13/09/09	122.78 mph
A/BRH	New class 2009		No record yet established
A2/E	New class 2010		No record yet established
Vintage	Not applicable to this class. Lambert Trophy awarded for the fastest speed recorded each season


The late John Rose	Stan Poyser	John Hyder	Bob Kirtley	Ron Hankins

Novice.	Up to 6.5cc standard side exhaust motors with silencer. Commercial Propellers reworked.
Super Novice.	6.5cc rear exhaust motors with tuned or minipipes. Engines reworked using standard parts.
B Class	Up to 15cc homebuilt engines.
B/S Class	Steam powered, all up weight not to exceed 9lbs.
B1R	2.5cc Airscrew Restricted. Commercial props, price limit on engines.
A Class	Up to 30cc homebuilt engines.
A/S Class	Steam powered, all up weight not to exceed 16lbs.
A/B Restricted L	Commercial engines from 10cc to 30cc. Maximum weight 6lbs. A3 line
A/B Restricted H	Commercial engines from 10cc to 30cc. Maximum weight 16lbs. A line
Vintage	Waterscrew or Airscrew, pre 1963 boat or design with engine of contemporary date.
A2/E (provisional)	Hull to meet A2 class limits, electric powered, batteries not to exceed 23 volts.


Commercial engine 'Novice'	15cc from castings 'B'	30cc from bar stock 'A'	Poppet valve flash steamer 'A/S'