Her final text contained just a single word, but it haunts Jean Hanlon's (pictured) family to this day. 'Help', the message read.

The former owner of the pleasure boat impounded after the deaths of two children in Bournemouth said the area is ‘dangerous’.

A girl of 12 and a boy of 17 were pulled from the sea after ‘getting into difficulties’ on Wednesday and later died in hospital.

The girl was from Buckinghamshire and the teenage boy from Southampton. Eight others were treated on the busy beach after being pulled from the sea by lifeguards.

Pleasure boat the Dorset Belle, which normally cruises near Bournemouth beach, was impounded by the authorities and put under guard in Poole Harbour, police said.

The former owner of the pleasure boat Dorset Belle (pictured) impounded after the deaths of two children in Bournemouth said the area is 'dangerous'

The former owner of the pleasure boat Dorset Belle (pictured) impounded after the deaths of two children in Bournemouth said the area is 'dangerous'

The former owner of the pleasure boat Dorset Belle (pictured) impounded after the deaths of two children in Bournemouth said the area is ‘dangerous’

A girl of 12 and a boy of 17 were pulled from the sea after 'getting into difficulties' on Wednesday and later died in hospital. Pictured: Bournemouth Pier

A girl of 12 and a boy of 17 were pulled from the sea after 'getting into difficulties' on Wednesday and later died in hospital. Pictured: Bournemouth Pier

A girl of 12 and a boy of 17 were pulled from the sea after ‘getting into difficulties’ on Wednesday and later died in hospital. Pictured: Bournemouth Pier

Peter Lamb, 70, who managed the vessel for 20 years, said he could not speculate on what had happened in the water, but said the sea surrounding the pier was ‘very dangerous’ for swimmers. He added: ‘If you swim under the pier then it’s very dangerous. There are barnacles around and an aggressive tidal flow and swell.’

It is unknown why the Dorset Belle was impounded, but police have said there was no ‘physical contact between a vessel and any of the swimmers’ on Wednesday.