A petition to save the all-weather lifeboat at New Quay in Ceredigion has gained support from more than ten thousand people.
In June, the RNLI announced it would replace the station's existing Mersey class all-weather vessel with a new 35-knot Atlantic 85 inshore lifeboat.
But seafarers, crew members and visitors say they are worried the change will leave a 70-mile gap on the coastline and no all-weather lifeboat in the whole of Ceredigion.
Campaigners are asking the RNLI to reverse their decision.
The RNLI said the decision was reached after an in-depth coastal review, which is carried out every five years and looks at the number of rescues, as well as trends in water use and the demand for search-and-rescue operations.
Since the petition was started, it has amassed more than 5,000 signatures online and another 5,000 on paper.
Ceredigion MP Ben Lake has also lent his support to the campaign.
As part of the changes, Pwllheli and Barmouth lifeboat stations will also each be allocated a new all-weather lifeboat.
The charity also says New Quay's current lifeboat will not leave Ceredigion until the other two are in place, which is not likely to be before 2020.
See the report by our reporter Jess Main below: