Complex sentence: The Blyth Harbour and Dock Company was formed in 1853, the shipyard had five drydocks, four building slipways and was one of the largest shipbuilding yards on the North East coast.
Split into simpler sentences: The Blyth Harbour and Dock Company was formed in 1853. The shipyard had five dry docks and four building slipways and was one of the largest shipbuilding yards on the North East coast.