B.C. Dutt class of tugboats are series of service watercraft built by Tebma Shipyard Limited (a subsidiary of Bharati Shipyard Ltd), for Indian navy during 1998-99. The vessels in the class have a rated capacity of 25 ton bollard pull. The propulsion is provided by Schottel Rudder Propeller (SRP). Bhim class tugboat is a follow-up order of B.C. Dutt class tugboat.
| External images | |
|---|---|
| B.C. Class | |
 INS Tarafdar | |
| 25 T BP SRP Tug |
| Name | Date of commission | IMO number [1] |
|---|---|---|
| INS B.C. Dutt | 1998 | 9177727 |
| INS Tarafdar | 1999 | 9177741 |
The Eisvogel class icebreakers was a two ship class built for the German Navy by the Hitzler Werft shipyard of Lauenburg/Elbe.
Bollard pull is a conventional measure of the pulling power of a watercraft. It is defined as the force exerted by a vessel under full power, on a shore-mounted bollard through a tow-line, commonly measured in a practical test under test conditions that include calm water, no tide, level trim, and sufficient depth and side clearance for a free propeller stream. Like the horsepower or mileage rating of a car, it is a convenient but idealized number that must be adjusted for operating conditions that differ from the test. The bollard pull of a vessel may be reported as two numbers, the static or maximum bollard pull - the highest force measured - and the steady or continuous bollard pull, the average of measurements over an interval of, for example, 10 minutes. An equivalent measurement on land is known as drawbar pull, or tractive force, which is used to measure the total horizontal force generated by a locomotive, a piece of heavy machinery such as a tractor, or a truck,, which is utilized to move a load.
The Ville-class harbour tugboats are a class of tugboats employed by the Royal Canadian Navy.
The Glen-class tug is a class of naval tugboat operated by the Royal Canadian Navy. Constructed in Canada, the class entered service between 1975 and 1977. The five vessels that comprise the class are split between the two major naval bases of the Royal Canadian Navy. The Royal Canadian Navy operated a fleet of tugboats during the Second World War which were also named the Glen class. The vessels of the current Glen class are each named after one of the vessels of the earlier class.
CFAV Firebrand is a Fire-class fireboat in the Royal Canadian Navy designed by Robert Allan Ltd. Firebrand is based in CFB Esquimalt, on Vancouver Island. Her sister ship CFAV Firebird was based in CFB Halifax and decommissioned in 2014.
The Fire-class fireboats/yard tractor tugs were two fireboats operated by the Royal Canadian Navy. The two vessels are CFAV Firebrand (YTR 562) and CFAV Firebird (YTR 561).
An emergency tow vessel, also called emergency towing vessel, (ETV) is a multi purpose boat used by state authorities to tow disabled vessels on high seas in order to prevent dangers to man and environment. The disabled vessel is either towed to a safe haven or kept in place against wind and current until commercial assistance by tug boats has arrived on site or until it has been repaired to the extent of being able to manoeuvre on its own. The need for ETVs as a preventive measure has arisen since the number of available commercial salvage tugs was reduced while potential dangers from individual vessels have increased. E.g. Spain has fourteen, Turkey has eleven, Germany operates eight, Norway has seven, France has five, Sweden three and the Netherlands, Poland, South Africa, Iceland and Finland each have one official emergency tug boat. Australia also operates emergency response vessels. The United Kingdom's four strong ETV fleet was to be disbanded in September 2011 due to budget cuts but the two vessels operating in Scottish waters received an extension of contract until the end of 2011.
The Arga class of tugboats are a series of six service watercraft being built by Tebma Shipyard Limited in Malpe, for the Indian Navy.
The Bhim class of tugboats is a class of service watercraft built by Tebma Shipyard Limited, a subsidiary of Bharati Shipyard Ltd, for the Indian navy.
The Madan Singh class of tugboats are series of service watercraft built by Tebma Shipyard Limited, for Indian navy during 1999. Propulsion is provided by Voith Schneider Propellers. The Nakul-class tugboat is a follow-up order of the Madan Singh-class tugboat.
The Anand class tugboats are a series of service watercraft built by Goa Shipyard Limited, for the Indian Navy. Tugs of this class have a 6-tonne bollard pull.
INS Gaj is an offshore tugboat built by Hindustan Shipyard Limited, Visakhapatnam for the Indian Navy. It operated under the navy's Eastern Naval Command.
The Gaj class offshore tugboats are a series of two auxiliary watercraft built by Garden Reach Shipbuilders & Engineers Ltd., Kolkata, for the Indian Navy. The vessels in the class are Indian Navy's biggest tugboats and can be used for towing aircraft carriers.
The Balram class of tugboats is a series of service watercraft built by Goa Shipyard Limited for the Indian navy. Each tug in the class has a rated capacity of 20 tonnes bollard pull. They are powered by twin Kirloskar SEMT-Pielistick of total 3,200 hp (2,400 kW). They are also fitted with three monitors for fire fighting. INS Bajrang and INS Balram are stationed at Mumbai.
The Bahadur class tugboats are a series of service watercraft built by Goa Shipyard Limited, for the Indian Navy. They have a rated bollard pull of 10 tonnes.
Nakul class of tugboats are series of service watercraft built by Tebma Shipyard Limited., for Indian navy during 2004. The vessels in the class have a rated capacity of 25 ton bollard pull. Propulsion is provided by Voith Schneider Propellers. It is a follow-up of Madan Singh class tugboat.
Tebma Shipyards Limited is a Chennai based shipbuilding company in India. The company has delivered more than 150 vessels, mainly offshore support vessels. It was shut down on June 2018 due to various reasons.
The RPC12 is a type of harbour tugboat operated by the French Navy. They utilise Voith propulsion to develop a 12-tonne bollard pull.
IRS class of tugboats are a series of Bollard pull tugboats built by Hindustan Shipyard Limited, Visakhapatnam, for the Indian Navy.
INS Buland is a 25 tonne bollard pull tugboat built by Hindustan Shipyard for the Indian Navy. It is the third ship of the series of 25-ton bollard pull tugboats after INS Balwan and INS Sahayak that were built within 10 months and delivered in January 2016 in time for International Fleet Review 2016. After the sea trials, the ship was flagged off by Commander A.S. Mitra (retired), Director (Shipbuilding) on 15 November 2016 and joined the Indian Navy at its home port of Port Blair.
