The McGrath of Harlow.
Suspect Peter K was refering to the loss of the Camber (in Sussex) lifeboat (circa 1890's ????) The Dungeness life boat would have launched in the lee of Dungeness and had clearer water, and a row down tide/wind to the shelter of Hythe and/or Folkestone after the rescue.
The West Mole / Pier at Folkstone ws built to give the channel packets shelter.