Welcome to R.J. MacIsaac Construction Ltd.

R J MacIsaac Construction Ltd. is a well-respected, innovative contractor specializing in marine construction for 38 years, successfully completing numerous commercial, industrial and residential projects.


We handle all types of projects including marine and land based dredging, armour stone breakwaters, excavation, demolition, tug, barge and scow work, sub-sea pipelines & cables and underwater drilling & blasting. We also offer tug and barge rentals.

We are currently the lead contractor in the dismantling and disposal of two decommissioned Royal Canadian Navy Ships, the HMCS Protecteur and HMCS Algonquin.

To see what we’re currently up to, find out more here.


If you have a marine construction job, contact us to see how we can work with you.