A matching pair of 20th century style Blomefield ships cannon based on the 18th century ships Blomefield pattern cannons. Each cannon weighs 30kg each.

The bronze barrel measures 49cm in length with the vent hole 39.5cm from the end, with a bore diameter of 2cm. Mounted on hardwood carriages with brass and steel fittings which measure 40cm long x 34cm wide x 21cm high.