Marine Construction, Diving, Pile Driving, Inspection Services, and More…

Semper Diving & Marine Corp. is a veteran-owned, Boston based commercial diving and marine construction contractor established in 2005. We provide a wide range of construction and inspection services to heavy civil contractors, facility owners, and municipal and private clients. Our capabilities include full service diving in all environments, marine construction and rehabilitation, pile driving, advanced underwater robotic services, as well as inspection services.

Marine Construction

Semper’s marine construction services expand beyond heavy civil contracting. We can provide a solution for any type of marine construction project, big or small.

Semper Commercial Diving

Commercial Diving

Our experienced divers are ready to provide you with a safe, reliable, and cost-effective solution to your marine and heavy civil projects.

Robotics AUV/ROV

Semper’s team includes veteran ROV and AUV pilots and specialists with years of marine autonomous underwater vehicle and remotely operated vehicle experience.

Waterfront & Subsurface Infrastructure

Waterfront and subsurface infrastructure: engineering resilience for coastal and underwater development.

Oil & Gas Inspection and Repair (Pipeline & Platform)

We are a recognized leader in oil and gas inspection and repair services & support for both maritime and landbased projects.

Commercial & Marine Pile Driving Services

Semper Diving & Marine drives piles for commercial and residential piers, docks, boathouses, seawalls, and bulkheads, supporting both marine and terrestrial projects.

Fleet & Equipment

We have the autonomous underwater vehicle and remotely operated vehicle assets you need to complete your project successfully.

Inspection Services

Marine inspectional services: safeguarding marine assets through rigorous inspection and evaluation.

Semper Offshore

We are recognized leaders in quality, safety, and offshore marine support services.


Neptune LNG Buoy Servicing

Semper has been the lead service provider of the Neptune Deepwater Liquid Natural Gas Pipeline located in 270 feet of water 20 miles East of Boston in Massachusetts Bay.

Over the past several years, Semper has provided dozens of visual and acoustic inspections through both ROV and AUV robotics as well as our divers. Repairs to the pipeline include pressure washing by both ROV and divers, sacrificial anode replacement, concrete articulated mat replacement, and more.


Highline Bridge

Semper Diving & Marine was contracted to install driven pile foundations for a Replacement Railroad Bridge owned by the Massachusetts Bay Transportation Authority located in Somerville, MA. The need for the bridge to be placed on a Driven Pile Foundation was due to the underlying soft compressive soils at the bridge location. The Structure is now fully supported down to the Bedrock on an H-Pile Foundation.


Hixbridge Road Pile Rehabilitation

The Hixbridge Road Bridge pile repair project in Westport, MA included grout removal and cleaning on the bridge’s concrete piles, in addition to grout pouring and steel pile jacket installation.