Complex sentence: Bolitho takes command of the brig and has too outrun the other ship in the harbor a frigate "Pegaso" he successfully avoids them in the reef and the "Pegaso" strikes a reef and sinks.
Split into simpler sentences: Bolitho takes command of the brig and has to outrun the other ship in the harbour-a frigate "Pegaso". He successfully avoids them in the reef and the "Pegaso" strikes a reef and sinks.