Crocker Marine Services designs, builds, and repairs docks, seawalls, and boat lifts throughout Marco Island, Florida, in Collier County. Marco is a dredged barrier-island community — most homes sit on a canal or one of the wider named waterways off the Marco River, Big Marco Pass, or Capri Pass. Water depth varies a lot from canal to canal, manatee slow-speed zones cover most of the island's water, and both the City of Marco Island and Collier County are involved in permitting.
Marine construction services in Marco Island
Crocker Marine is a full-service marine contractor — docks, seawalls, boat lifts, dredging, and inspections, in-house. See the full range of services or browse completed projects across Southwest Florida.
Docks
Canal width and Marco's roughly three-foot tidal range drive the dock design; on the wider waterways, wake and wind fetch matter too. We build new docks and handle repair, replacement, accessories, and canopies and shade covers.
Seawalls
Marco was cut from mangrove and filled in the 1960s and 70s, so the island's seawalls are at or past a normal service life — and Hurricane Irma's direct hit in 2017 and Ian's surge in 2022 accelerated the replacement cycle. We install and replace concrete and vinyl seawalls and extend sound ones with repair and maintenance before a full replacement or new wall.
Boat lifts
We install and service boat lifts from Coastal Boat Lifts in Fort Myers. On the shallower interior canals, the mean low-water depth is the constraint, and dredging is often paired with the lift. Repair covers cables, motors, bunks, and controls.
Dredging
Many Marco canals have shoaled since they were cut. Our residential dredging restores a canal or slip to its permitted design depth, permitting handled, and is commonly done just before a dock or lift so the access matches the structure.
Marine inspections
For island waterfront purchases — especially after the last few storm seasons — our marine inspections give a written condition report on the dock, seawall, and lift, with remaining service life and needed repairs.
Permits and local conditions in Marco Island
Marine construction on Marco Island is permitted through the City of Marco Island and Collier County, with the Florida Department of Environmental Protection and the U.S. Army Corps of Engineers covering work below the mean high-water line. We prepare and submit the survey and drawings.
- Manatee zones. Most of the water around Marco is a manatee protection and slow-speed zone; in-water work can carry seasonal restrictions or manatee-watch conditions.
- Canal depth. It varies widely — canals near the passes stay deeper, interior canals shoal — so a depth check at mean low water comes before any dock or lift design.
- Mangroves. Trimming or removing mangroves for a dock is regulated separately by the state; there are allowances but firm limits, and we work within them.
- Storm exposure. Marco took Irma head-on in 2017 and Ian's surge in 2022; a large share of the current work is hardening and replacement.
Why Marco Island homeowners choose Crocker Marine
- True Price Guarantee. The quoted price is the price you pay — no change orders, excluding rock excavation, client-requested changes, or specialty permitting.
- Licensed and insured. Florida certified building contractor CBC1266139, with $2 million in insurance coverage.
- Experienced in island conditions. More than 60 years of combined experience and a showroom at 2101 McGregor Blvd in Fort Myers.
- Warranties. A 15-year seawall warranty and a 1-year dock warranty.
Marco Island marine construction FAQ
How deep is the water in my Marco Island canal?
It varies widely by canal. We check the depth at mean low water before designing a dock or lift — interior canals often need dredging to hold enough water at low tide.
Do manatee rules affect marine construction on Marco Island?
Yes. Most island waters are slow-speed manatee zones, and in-water construction can carry manatee-protection conditions or seasonal work windows. It's built into the permit.
Can I trim the mangroves in front of my seawall for a dock?
Mangrove trimming is regulated by the state separately from the dock permit. There are allowances for access, but there are limits — we handle the dock work within the rules.
My Marco seawall is from the original development. Repair or replace?
Most original walls are past service life. If the cap and panel are failing or soil has washed out from behind the wall, replacement is usually the call — a marine inspection confirms which.
Who permits dock and seawall work on Marco Island?
The City of Marco Island and Collier County, plus FDEP and the Army Corps for anything below the high-water line. Request a free estimate or call (239) 841-9674.
