Molo IV

The site runs along the northeast coast of Santo Stefano and faces open Tyrrhenian sea across the NNE-NE-E-ESE arc, which stays fully exposed to wind-waves from that quadrant and to the long Scirocco (SE) fetch. The bulk of the small island sits to the south and west of the wall and shadows the whole S-through-W arc almost completely, so the Libeccio (SW) and much of the Mistral/Tramontana (NW-N) are blocked from reaching the face; the island of Ventotene about 2 km to the west-northwest reinforces that western shelter. As a nearshore wall the main concern is surface state and along-wall current when easterly or southeasterly winds blow onto the exposed side.