Indian Coast Guard. These vessels are specialised ships built for patrolling, policing, search and rescue operations in India's exclusive economic zone. Each carries a helicopter on board. Seven such ships have been delivered to the Coast Guard. Floating police stations Based on the order by the BSF, the yard started construction of floating border outposts (BOPs). Essentially these BOPs are floating police stations with four high-speed boats. The yard has delivered 9 out of an order of 14 BOPs. Other vessels Among other ships, the yard has built three fast missile boats, a cadet training ship, and other utility ships for the Indian Navy. It has also built water tankers for the Iranian naval forces. Submarines Shishumar-class submarine The s are a variant of the Type 209 diesel-electric submarine designed by Howaldtswerke-Deutsche Werft. Two vessels of this class were constructed at MDL. These were the first two indigenously built submarines in India. was commissioned on 7 February 1992 and was commissioned on 28 May 1994. Kalvari-class submarine MDL is building six diesel-electric submarines of the under a technology-transfer agreement with DCNS. , the first in this class, was commissioned by Indian Prime Minister Narendra Modi on 14 December 2017 from Naval Dockyard in Mumbai. Commercial projects Offshore platforms MDL builds offshore oil drilling platforms. It operates facilities at Alcock, Mumbai, and Nhava Yard for the construction of platforms with wellhead, water injection and production separator and glycol process capabilities, as well as jackup rigs, SBMs and other offshore structures. Repair and maintenance jobs on offshore rigs are undertaken at Alcock; jackets up to length and 2,200-tonne weight can be constructed. At Nhava, jackets up to length and 2,300-tonne weight, main decks up to 550-tonne weight and helipads of 160-tonne weight can be constructed. The yard builds specialist vessels able to clean oil spills and fight fires on offshore drilling platforms. A welding training school develops and maintains welding techniques and procedures. See also Cochin Shipyard Garden Reach Shipbuilders and Engineers Goa Shipyard Limited Hindustan Shipyard References External links Website Indian Navy Shipbuilding companies of India Government-owned companies of India Manufacturing companies based in Mumbai Mumbai docks Vehicle manufacturing companies established in 1934 Companies nationalised by the Government of India Indian companies established in 1934 Companies listed on the National Stock Exchange of India Companies listed on the Bombay Stock Exchange