Portland Port is replacing its deep-water berth with a new one that will be able to handle two 350m (1,148ft) long cruise ships at the same time.
In its planning application to Dorset Council, the port previously warned piling work could see significant levels of noise.
The work, due to start in October, will see concrete structures demolished and 180 steel piles hammered in.
Ian McQuade, the port’s commercial general manager, said: “The new facilities will enable Portland Port to keep pace with the increasing demands from our existing cruise and cargo customers.”
Source: BBC