Ville-class tug
Ville-class tugboat CFAV Merrickville
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| Class overview | |
|---|---|
| Name: | Ville class |
| Builders: |
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| Operators: |
 Royal Canadian Navy
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| Built: | 1974–1975 |
| In commission: | 1975–present |
| Completed: | 5 |
| Active: | 5 |
| General characteristics | |
| Type: | 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: |
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| 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.
Canada operated a fleet of 17-ton tugs, built during the Second World War which were also called the Ville class. The current vessels are named after those vessels. 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.
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 (19 km/h; 12 mph) and loses speed in turns. 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).
Members of the class built on the east coast were given one Caterpillar 3406 diesel that provides 365 horsepower (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 knots (17 km/h; 10 mph).
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.
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. The larger tugs are also split between both coasts.
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