Full Scope Marine Construction

Services Built for Coastal Conditions

Sand Island Marine Construction provides a complete range of waterfront and shoreline services for properties throughout Maine’s Midcoast. We handle docks, floats, ramps, erosion control, sea walls, and island-based work with a combination of practical skill, careful planning, and dependable equipment.

We approach each project with an eye for long-term durability and respect for the coastal environment. Our DEP certification in Basic and Advanced Erosion Control Practices ensures that every job is completed with proper shoreline protection and adherence to state guidelines. Whether a property is tucked away in a sheltered cove or positioned along open water, we create solutions that improve access, stabilize the shoreline, and support both residential and commercial needs across the region.

A boat on the water equipped with a crane for dredging or loading equipment, with a clear sky and calm sea.

Crafting Reliable Marine Structures Across the Midcoast

Our projects show the level of care and craftsmanship that goes into every build. From docks and ramps to full shoreline improvements, each job is completed with the same steady approach and attention to detail. View a selection of our recent work and see how our experience comes through in real Midcoast conditions.

  • Dock Construction

    We build dock systems that match the demands of the Midcoast shoreline. Every dock is designed for local tide ranges, exposure, and seabed conditions. Our crew uses proven construction methods, quality materials, and careful site planning to create docks that provide safe, long lasting access to the water. The result is a structure that holds up season after season with minimal maintenance.

  • Float Construction

    Our floats are built for durability, balance, and steady performance in the varying conditions found along the Midcoast. We fabricate floats to meet the demands of your specific site, taking into account wave action, seasonal hauling, and the weight of regular use. Each unit is assembled with reliable hardware and flotation systems, then delivered and installed with precise care.

  • Ramps

    We construct ramps that create smooth, secure transitions between docks, floats, and shore. Our team builds both aluminum and timber styles, choosing materials and layouts that fit your property’s grade and tidal range. Each ramp is designed to operate reliably in changing water levels and to remain safe and stable throughout the year.

  • DEP Permitting

    Navigating the permitting process can be complicated, and our DEP certification in Basic and Advanced Erosion Control Practices allows us to guide clients through each step. We handle site assessments, documentation, and communication with the appropriate agencies. Our goal is to move the project forward efficiently while meeting all environmental and regulatory requirements.

  • Erosion Control

    Shoreline erosion varies from site to site, and we tailor each solution to local conditions. Using approved techniques and materials, we stabilize banks, protect soil, and support existing vegetation. Our approach reduces sediment movement and helps maintain the long term health and stability of the shoreline while preserving the natural look of the property.

  • Sea Walls

    We design and build sea walls that defend against storms, ice, and gradual shoreline loss. Each wall is engineered for structural stability and matched to the contours and conditions of the site. With careful excavation, solid footing work, and quality stone or concrete, we create barriers that protect property and retain their strength over time.

  • Mooring Work

    Our team installs, inspects, and maintains moorings for a range of vessel sizes. We select proper ground tackle for depth, bottom type, and exposure, and we ensure each system is set correctly for safe holding power. Annual inspections and maintenance help extend the life of the equipment and protect the boats that rely on it.

  • Inspections

    We provide thorough inspections of docks, ramps, floats, pilings, and shoreline structures. Each inspection documents wear, damage, and structural concerns, giving property owners a clear understanding of what needs attention. Our findings help guide repair planning and prevent minor issues from becoming costly problems.

  • Repair Services

    Over time, marine structures face stress from weather, ice, and saltwater. We offer detailed repair services to restore docks, floats, sea walls, and other shoreline features. Our work focuses on strengthening the existing structure, replacing compromised components, and ensuring long term reliability without unnecessary replacements.

  • Island Earthwork Projects

    Working on islands requires the right equipment and logistics. With barge access and experienced operators, we handle clearing, grading, and shoreline access work on island properties throughout the Midcoast. Our crew manages transport, staging, and execution with efficiency and respect for the surrounding landscape.

  • Island Septic Systems

    We install septic systems on island sites where access can be challenging. With dependable barge transport and the ability to move materials and equipment safely, we complete excavation, tank placement, and field installation with careful attention to local soils and environmental requirements. Each system is built to function reliably for years to come.

  • Shoreline Restoration

    For shorelines worn by storms, erosion, or past damage, we provide restoration solutions that rebuild stability and improve natural resilience. Our work may include regrading, stone reinforcement, vegetation support, and other methods suited to the site. The goal is to create a healthier, more stable shoreline that blends naturally with the surrounding coast.

Where We Work

Our team covers a wide stretch of Midcoast and Downeast Maine, including Boothbay, Boothbay Harbor, Bristol, Damariscotta, Bremen, Waldoboro, Friendship, Port Clyde, Thomaston, Rockland, Rockport, and Camden. Each project is planned with the tides, terrain, and access needs of this region in mind.