The Department of Infrastructure has submitted a planning application to try to protect Ramsey from sea flooding in future.
It's applied for permission to carry out work around the harbour on West Quay, East Quay and Derby Road.
The plans would see flood walls 1.3 metres high - around four feet - installed alongside the harbour with floodgates around openings, as well as new paving and surfaces.
In its application, the DOI says climate change means the risks of flooding are worsening, and the need for protection is becoming more urgent.
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