What size boat fits on the river?

The easiest way to answer this question is to provide the maximum dimensions for boats on the local river systems;

 

The River Great Ouse

Length: 23m (70ft)

Beam: 3.15m (10ft 4ins) (Special technique required to go upstream of locks)

Airdraught: 2.4m ( 8ft) (Offord Lock)

Draught: 1m (3ft 3ins)

 

The River Nene

Length: 23m (78ft)

Beam: 3.9m (13ft)

Airdraught: 2.1m (6ft 10ins)

Draught: 1.2m (4ft)

 

The Middle Level

Length: 21.3m (70ft) (Shop bend at Whittlesey)

Beam: 3.65m (11ft)

Airdraught: 2.1m (6ft 10ins)

Draught: 0.7m (2ft 3ins)