On the second level of the lighthouse is a display of different lenses used in Range lights and Buoy lights. The red and blue drum style lenses were used in Gas Buoy Lights.
Plastic inserts could be placed inside a lens to indicate blue for port ( left ) or red for starboard (right).
Buoy lights were used on the water, warning mariners of dangerous rock reefs. Pt. Prim has a rock reef that extends out 4 miles and ships have to keep outside this buoy light to safely navigate into the Charlottetown Harbour.
Point Prim Lighthouse now utilizes a solar buoy light!