Ville-class tugs
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Ville-class tugboat CFAV Merrickville
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| Class overview | |
|---|---|
| Builders: |
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| Operators: |  Royal Canadian Navy |
| Built: | 1974–1975 |
| In commission: | 1975–present |
| Completed: | 5 |
| Active: | 5 |
| General characteristics | |
| Type: | Ville-class Tugboat |
| Displacement: | 45 long tons (46 t) |
| Length: | 19.5 m (64 ft 0 in) |
| Beam: | 4.72 m (15 ft 6 in) |
| Draught: | 2.74 m (9 ft 0 in) |
| Installed power: |
|
| Propulsion: | 1 x steerable kort nozzle |
| Speed: | 9 kn (17 km/h; 10 mph) |
| Notes: | Bollard pull: 7.5 tons |
The Ville-class harbour tugboats are a class of tugboats employed by the Royal Canadian Navy.[2][3]
Canada operated a fleet of 17 ton tugs, built during the Second World War which were also called the Ville-class.[3] The current vessels are named after those vessels.[4] There is confusion that the current Ville-class design was based on the British Pup-class tugs. The original 17 ton version was based on that design, however the new Villes are an independent design.[3]
Design
The Ville-class was designed as harbour tugs. They have a low-slung shape that is ideal for tight maneuvering and nudging exercises on larger ships. Their kort-nozzle allows for a greater bollard pull however it loses its pull at anything over 10 knots and loses speed in turns.[3] The Ville-class are 19.5 m (64 ft 0 in) long with a beam of 4.72 m (15 ft 6 in) and a draught of 2.74 m (9 ft 0 in).[5]
Propulsion
Members of the class built on the east coast were given one Caterpillar 3406 diesel that provides 365 hp (272 kW) and Ville-class tugs built on the west coast were supplied with one Caterpillar D343 rated at 365 hp (272 kW). This power is directed towards a steerable kort nozzle which gives the class a speed of 9 kn (17 km/h; 10 mph).[5]
Towing
The Ville-class has a max Bollard pull of 7.5 tons, denoting them as small tugboats. The bollard pull measures the amount of pulling or pushing power a ship has.[3]
Ships
| Ville-class tugboats | ||||
|---|---|---|---|---|
| Name | Pennant number | Commissioned | Builder | Stationed |
| Lawrenceville | YTL 590 | 1974 | Vito Steel & Barge Co. | CFB Esquimalt |
| Parksville | YTL 591 | 1974 | Vito Steel & Bargo Co. | CFB Esquimalt |
| Listerville | YTL 592 | 1974 | Georgetown Shipyard, P.E.I. | CFB Halifax |
| Merrickville | YTL 593 | 1974 | Georgetown Shipyard, P.E.I. | CFB Halifax |
| Marysville | YTL 594 | 1974 | Georgetown Shipyard, P.E.I. | CFB Halifax |
Other auxiliary ships
The Royal Canadian Navy operates six other, larger tugboats, the 140 ton CFAV Tillicum, and five 250 ton Glen class tugs, and two 140 ton Fire class fireboats.[3][6][7] The larger tugs are also split between both coasts.
References
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