The environmental campaign group, Greenpeace, is opposing a proposal to set up a ship-breaking yard in India.
The ships are dragged onto the beach and then dismantled
It has warned that the proposed yard in Andhra Pradesh state will destroy a mangrove forest and deprive thousands of fishermen of their livelihood.
From the 1970s, higher costs in Europe have led to ship-breaking work moving to the developing countries like India.
Greenpeace estimates 90% of obsolete ships are broken up in India, Bangladesh, Pakistan, China and Turkey.
The group's activists protested in the Andhra Pradesh capital, Hyderabad, against a plan to set up a ship-breaking yard on the coast of Kakinada.
Greenpeace campaigner Ramapati Kumar told the BBC that the yard would destroy a mangrove forest and a wildlife sanctuary in the area.
He said more that it would also affect marine life in the area and make more than 200,000 fishermen jobless.
"The Andhra Pradesh state government has to decide whether it wants fishing activity to continue or it wants tons of hazardous waste to be released," Mr Kumar added.
Environmentalist T Vijaylakshmi said that big ships would not be able to be anchored near the shore of Kankinada because the waters were shallow in the area.
Greenpeace campaigners say that the ship-breaking yard in Alang in the state of Gujarat had affected marine life and the health of the local people.
There ships from around the world are broken up by workers, including children, without protective equipment.
Greenpeace says scrapped ships contain a wide range of toxic paints and substances which are hazardous to workers' health.