Iron Guppy

[1][2] She replaced the William Rest, a tugboat that served in Ports Toronto, and its predecessor agencies, since 1961.

The Iron Guppy has very similar operational characteristics as the William Rest, however, with modern electronics.

[3] The Iron Guppy is a single screw tug, capable of breaking ice up to 6 inches (15 cm) thick.

[5] The vessel was designed by Robert Allan Limited, ship architects, and built by Hike Metals of Wheatley, Ontario.

Fireboat William Lyon Mackenzie gave the Iron Guppy a ceremonial shower, to mark her commissioning, on July 23, 2016.