Mumbai, Nov 6 (PTI) In a bid to tighten security along the 40-km-long coastline of the city, Mumbai police today acquired four amphibious boats equipped with advanced technology like the Global Positioning System (GPS).

The 'Sealegs Amphibious Marine Crafts', which can carry four armed personnel, can operate on both land and water.

The boats will be stationed at Girgaum, Dadar, Juhu and Versova beaches.

The amphibious vehicles, costing Rs 40 lakh, can travel at over 40 knots on water and over 10 kms per hour on land.

Such boats are already actively used in Australia, New Zealand, Malaysia and Spain.

"Post-26/11, we conducted a study to figure out loopholes in the security system. We found that there is a need to have a number of speed boats to patrol the city's waterfront," said City Police Commissioner D Sivanandan, who launched the boats at Girgaum Chowpatty in south Mumbai.