It is a cylindrical stone tower lighthouse with a conical roof, situated on the west side of entrance to Larne Lough.

Chaine developed Larne's short sea route to Scotland as well as establishing the town as a transatlantic port.

The inscription on the plaque adorning the monument is as follows: In 1885, the Memorial Committee for Chaine sought the assistance of the Commissioners of Irish Lights to help to build and maintain a tower, but they initially refused.

Eventually it was agreed the Memorial Committee would build the replica round tower, without a light, at Sandy Point Bay, and the Larne Harbour authority would maintain it.

Responsibility for maintaining the light now falls under the remit of the attending keeper at Ferris Point Lighthouse on the other side of the Harbour.