The origins of the ferry at Colintraive are obscure but pre-date the introduction of steam on the Clyde. The early steamboat guidebooks refer to the ferry in the Kyles of Bute. “From Rothesay the channel, for some miles, takes a north-westerly course, leaving the Clyde, and taking the name of the Kyles of Bute, which encircles half the island. In sailing through this channel, several agreeable prospects are met with. A few miles farther on to the right is the opening of Loch Striven; and near it the house of Southall, Campbell; about 8 miles from it is a ferry called Collintray; close to it are some rocky islands, and the mouth of Loch Ridden, where is Red Island, on which are the ruins of a castle of that name, used as a garrison, in 1685, in favour of Monmouth.”—The Steamboat Companion, James Lumsden & Sons, Glasgow, 1820. The construction of the road down Glendaruel in the early...