In Part 3, the Castle Steam-Packet Company sold off most their wooden steamer fleet, and replaced them with new iron steamers. There was new competition from the Bute Steam Packet Company on the Rothesay station and the Argyle on the Loch Fyne route. The loss of the Tarbert Castle in a storm left the company vulnerable, and the Arran connections were again discontinued. The lucrative trade through Tarbert to the west highlands and islands by the Maid of Islay was curtailed by the new route pioneered by the Brenda, and then the Shandon, connecting with a track-boat on the Crinan Canal. The imminent opening of the Greenock Railway posed a threat to the Clyde steam-boat services from Glasgow. If there seemed to be some optimism for the coming year among the owners and patrons of Bute Steam Packet Company and the Glasgow, Dunoon, and Kilmun Steam Boat Company, there was feeling of gloom...