Outline plans for a 450-berth marina with 253 apartments in Fishguard Harbour were given the green light by Pembrokeshire County Council planners yesterday (Tuesday).
Jeers could be heard from a packed public gallery as members of the planning and rights of way committee voted against a site visit and gave the plans the go ahead.
The proposal also includes space for shops, financial and professional services and restaurants and cafes.
There are also plans for land to the north west of the site to be reclaimed from the sea and set aside for potential expansion of the port.
Speaking as an objector, Goodwick resident Hugh Jenkins questioned the impacts of "establishing a new community within an existing one," and said the development of the area should not put current amenities "out of reach" of existing residents.
Fishguard and Goodwick Town Councillor Henry Jones said: "The town council is fully behind the marina but there are going to be consequences and we have to make sure they are properly addressed or it will be another white elephant."
Local County Councillor Moira Lewis raised concerns about the number of apartments, the sewage system and the lack of information regarding the proposed platform and proposed a site visit.
"What is proposed would change the whole visual aspect of the sea front as it is now," she added.
Cllr Jamie Adams proposed that the reserved matters of the application come back to the committee "as a matter of principle", and he was supported by a vote of 15 for, none against with five abstentions.