Dublin Port "has to be moved" away from the city centre, a Docklands business group has said.
Docklands Business Forum is calling for the 200 hectares of land at the mouth of the Liffey to be used for new apartment and office space instead.
They suggest a "bold and ambitious" plan to address the housing crisis is now needed.
It's part of the group's submission to the city council, as officials work on a new 2022-2028 draft development plan.
The Irish Times reports that Dublin Port chief executive Eamonn O’Reilly has dismissed the proposal, saying the port authority doesn't take the forum's "views at all seriously".
He said he doesn't believe it would be possible to get planning permission due to European environmental law.
However, Alan Robinson - CEO of the Docklands Business Forum - told Newstalk Breakfast the current port must be moved elsewhere.
He argued: “The planning authority has developed office space for 70,000 workers in the Docklands, but only living accommodation for 20,000.
"50,000 need to find accommodation elsewhere.
“It’s clear the 200 hectares of Dublin Port is best suited now to apartment development.”
He said people working in the Docklands area - which houses offices for major companies such as Google, PWC and Airbnb - have to look for homes in Meath, Kildare and other surrounding counties due to the accommodation crisis.
Mr Robinson said it was "nonsense" for Mr O'Reilly to suggest the proposal to move Dublin Port isn't workable.
He said: “It’s a bid of a red herring for Eamonn to turn around and say we’re not going to get planning permission when he spends half his day applying for planning permission.
“We need to do projects like this. We need a country that is bold and ambitious for its future. We can’t have tinkering policies that have one-floor extra height here, or one-floor extra height there.
“We can think big, and we can do this: if we have the will, we can have the way.”
Mr Robinson is not the first person to call for Dublin Port to be moved elsewhere.
Wexford TD Verona Murphy has previously claimed the port should be relocated to Rosslare - saying the port in the town has the capacity to take extra traffic.