Ville-class tug

From Wikipedia, the free encyclopedia
  (Redirected from Ville class tugs)
Jump to: navigation, search
CFAV Merrickville in Halifax -b.jpg
Ville-class tugboat CFAV Merrickville
Class overview
Builders:
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:
  • East coast Villes - 1 x Caterpillar 3406 diesel at 365 hp (272 kW)
  • West coast Villes - 1 x Caterpillar D343 rated at 365 hp (272 kW)
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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

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[edit]

  1. ^ "Naval Tugs Built Since WWII". shipbuildinghistory.com. Retrieved 27 September 2013. 
  2. ^ "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. 
  3. ^ a b c d e f "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. 
  4. ^ "Merrickville / Ann Marie". Russel Brothers Limited. Retrieved 2008-02-13. 
  5. ^ a b John Moore, ed. (1981). Jane's Fighting Ships 1981-1982. London: Jane's Publishing. p. 84. ISBN 0-531-03977-3. 
  6. ^ "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. 
  7. ^ "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.