Click here to goto www.lobmbc.co.uk home page. The home of Lowestoft and Oulton Broad Motor Boat Club. The UK's largest and most historic powerboat circuit racing club.
Power Boat Circuit Racing News from LOBMBC
Fixtures - Dates for circuit racing powerboats at Oulton Broad, Suffolk
Results for all powerboat classes. Catamarans, Hydroplanes, J250 Juniors and monohulls
Competitors - drivers names, team details, boat and engine types of competitors racing at LOBMBC.
Photos - Photo's of powerboat race days at Oulton Broad
Race Information - about circuit raced power boats at Oulton Broad. including lap records for all classes
Classes, descriptions of the different class power boats raced.
Champions - Club Champions for Hydroplane, catamaram, monohull and junior classes
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Classes

Circuit powerboat racing is divided into 3 main categories, which are further sub-divided into classes based on engine capacity. In addition to these, there is a further division for inboard powered craft.

 

Racing Outboards 'O' Series

The prefix 'O' denotes an open class. This means there are very few restrictions regarding hull design, engine tuning and the type of fuel used.
OSY.400
 OSY.400

Class Engine Capacity Hull Type Engine Manufacturers Speed Record
OSY.400 Up to 400cc Hydroplane Yamato 72.64 mph
O.125 Up to 125cc Hydroplane Yamaha, Rossi, Mac Minerelli, G.R.M, V.R.P 84.32mph
O.250 (F-250) 176cc - 250cc Hydroplane König, Yamato, Rossi, G.R.M, V.R.P, Arens 100.56 mph
O.350 (F-350) 251cc - 350cc Hydroplane König, Yamato, Rossi, G.R.M, V.R.P 113.25 mph
O.500 (F-500) 351cc - 500cc Hydrocat König, VRP, Rossi, Konny 119.24 mph
O.700 501cc - 700cc Hydrocat König, VRP 121.97 mph
O.850 (F3) 701cc - 850cc Catamaran Johnson, Evinrude 104.49 mph
O.3000 (F1) 1950cc - 3100cc Catamaran Mercury 152.20 mph

 

Sports Outboards 'S' Series

The prefix 'S' denotes a sportsboat class. These have similar capacity limits to the 'O' series, but engines must be standard production types.
S.850
 S.850

Class Engine Capacity Hull Type Engine Manufacturers Speed Record
S.550 (F5) 351cc - 550cc Catamaran Selva, Tohatsu, Nissan 73.52 mph
S.850 (F4) 751cc - 870cc Catamaran Yamaha, Selva, Johnson 101.93 mph
S-2000/F-1000 871-1000cc Catamaran Selva 84.71 mph
S.2000 (F2) Up to 2000cc Catamaran Mercury, Mariner 124.69 mph

 

Tourist Monohulls 'T' Series

This division is limited to simple monohulls powered by standard stock production outboard engines. Power-trim is now permitted in the senior classes.
J.250
 J.250

Class Engine Capacity Hull Type Engine Manufacturers Speed Record
J.250 Up to 250cc Junior Monohull Yamaha, Mariner 40.61 mph
T.750 551cc - 750cc Monohull Yamaha, Mercury, Johnson 73.23 mph
T.850 751cc - 870cc Monohull Yamaha, Johnson, Evinrude 76.52 mph
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