Complex sentence: HMNB Clyde is located on the eastern shore of Gare Loch in Argyll and Bute, Scotland, situated to the north of the Firth of Clyde and 25 miles west of the city of Glasgow.
Split into simpler sentences: HMNB Clyde is on the eastern shore of Gare Loch in Argyll and Bute, Scotland. It is to the north of the Firth of Clyde and 25 miles west of the city of Glasgow.