The helicopter was on a routine patrol off the coast south of Mumbai when it crash-landed six nautical miles north of Murud, near Alibaug, at around 2.50 p.m. on Saturday.
The Coast Guard said the crew experienced technical difficulties around 25 minutes after taking off.
"The crew managed to land the helicopter avoiding populated areas and the sea crew has sustained minor injuries," the Coast Guard said in a statement.
A statement from the Indian Navy, meanwhile, said the four crew members of the ICG helicopter were "rescued from the scene of the crash" and were flown to Naval Hospital INHS Asvini at Mumbai. One pilot suffered minor injuries and is being treated at the hospital.
One ICG Chetak and an Air Force Mi 17 helicopter were also part of the search effort.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)