Complex sentence: The new scout cruiser "Helgoland" accompanied by five "Tatra" class destroyers leave the advance base of Cattaro and head for Durazzo late on the 28th, and while on passage, sight French submarine "Monge" on patrol to the south of Cattaro.
Split into simpler sentences: The new scout cruiser "Helgoland" accompanied by five "Tatra" class destroyers leave Cattaro and head for Durazzo late on the 28th. While on passage, they sight the French submarine "Monge" on patrol to the south of Cattaro.