It's part of a programme of archaeological investigations and is also expected to help their recovery.
HMS Montagu grounded on rocks around Lundy in the Bristol Channel in 1906 and couldn't be saved.
Historic England is working with Help for Heroes to investigate the wreck to see if it should be protected by the Department for Digital, Culture, Media and Sport.
Exeter care agency rated 'inadequate' and in special measures
Bosses at Horizon Care insist change
Raw sewage spews into Plymouth suburb estate and woods
Concerns raised for public health and wildlife in Woolwell
Councillor stands under trees to stop chainsaw massacre
Emergency preservation order now in place
Three years jail for charity box thief
And he can't eat in McDonald's for eight years
Spat over whether 'inadequate' children's services are as bad as MP suggests
Exeter's Steve Race believes they are in 'last chance saloon;
