A merchant vessel was approached by 9 white hulled skiffs, 10 POB in each skiff in position Lat. 14 53N, Long. 042 27E (Bab-El- Mandeb Strait North Bound). The skiffs closed to 2 cables and ladders were sighted. AST presence deterred. Vessel is currently being followed by 5 skiffs. Vessels transiting the area are advised to exercise extreme caution.