Complex sentence: She was one of 28 merchant tartanes that the French Navy acquired between March and June 1794 at Sète and Agde, and then armed with large guns to serve as gunboats.
Split into simpler sentences: She was one of 28 merchant tartanes that the French Navy acquired between March and June 1794 at Sète and Agde. The French Navy armed the tartanes with large guns to serve as gunboats.