Bonnka is the brand-new Norfolk motor cruiser, built by Jonnatt's the boatbuilders in Horning on which the Death and Glories stow away during its road delivery journey in 'Coots in the North' (CN3).
Bonkka or bonker is an East Anglian (Norfolk) word meaning "very large" or "a big strapping person"; and is frequently applied to young girls (CN2).
Pete's father Peter the boatbuilder accompanies the cruiser on its journey to the lake as Jonnat's representative.
Mr Woods the lorryman (like the lorry) comes from Norwich; there he has a wife and a daughter Molly (CN4).
At the Lake, possession of the cruiser is taken by the Bonnka owner. (CN "It's gone!")