Ville-class tug
 Ville-class tugboat CFAV Merrickville | |
| Class overview | |
|---|---|
| Name: | Ville class |
| Builders: |
|
| Operators: |
 Royal Canadian Navy |
| 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: |
|
| 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 (19 km/h; 12 mph) 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 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).[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 |
| Granville | 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
- ↑ "Naval Tugs Built Since WWII". shipbuildinghistory.com. Retrieved 27 September 2013.
- ↑ "Esquimalt Harbour". Canadian Department of National Defence. 16 July 2007. Retrieved 13 February 2008.
Two VILLE (YTL) Class tugs - LAWRENCEVILLE and PARKSVILLE - 45 gross tons, fitted with steerable Kort Nozzle. Maximum bollard pull 7.5 tons.
- 1 2 3 4 5 6 "Canadian Forces Small Ships — the Ville class YTL Harbour Tug". Canadian American Strategic Review. Archived from the original on 2008-03-02. Retrieved 13 February 2008.
- ↑ "Merrickville / Ann Marie". Russel Brothers Limited. Retrieved 2008-02-13.
- 1 2 John Moore, ed. (1981). Jane's Fighting Ships 1981-1982. London: Jane's Publishing. p. 84. ISBN 0-531-03977-3.
- ↑ "Canadian Forces Small Ships — the Glen class YTB Tractor Tug". Canadian American Strategic Review. Archived from the original on 2008-03-02. Retrieved 2008-02-13.
- ↑ "Canadian Forces Small Ships — the Fire class YTR Rescue Boats". Canadian American Strategic Review. Archived from the original on 2008-03-02. Retrieved 2008-02-13.