"Toullcos" , an East cardinal buoy , lies approximately one nautical mile in the North of Port of Pontusval entrance , (app. 48°41'30 '' N - 4°19'24'' W, when in position )

.We can recommand to use it as a landfall mark to reach Brignogan .
- Coming from the West and Aman-ar-Ross buoy steering 95° true , one will avoid dangers of Roc'h ar Ploum , Pen Leac'h Ven and Carrec Ploum.
- Coming from the East ,steering approximately 255° from Basse Plate in Ile de Batz channel , yachts will leave Basse Menut , and basse Breisel to the South.