Complex sentence: At about 10am the French Admiral Comte de Tourville, with his flag in the French ship "Soleil Royal", attacked Russell's flagship but around 1pm, Tourville was forced to disengage with extensive damage to his rigging and sails.
Split into simpler sentences: At about 10am the French Admiral Comte de Tourville, with his flag in the French ship "Soleil Royal", attacked Russell's flagship. However by around 1pm Tourville was forced to disengage with extensive damage to his rigging and sails.