Grassy Key Marina in Marathon, Florida
59073 Overseas Hwy, Marathon, FL 33050, USA · Marathon waterfront
Max LOA
60 ft
Water depth
Contact marina
Shore power
Contact marina
About Grassy Key Marina
Grassy Key Marina is a full-service marina located in Marathon, Florida on Marathon waterfront. Verified amenities include fresh water. The marina reports a maximum LOA of 60 ft. Water depth at the slips is listed as Contact marina. Reach out to the dockmaster to confirm availability, pricing, and any docking requirements.
Grassy Key Marina operates as a full-service marina in Marathon, Florida. Transient dockage is available for boaters passing through Marathon, Florida. Liveaboard policy is not confirmed in our records — ask the marina directly. Fuel service on-site is not confirmed — plan fueling at nearby fuel docks if needed.
Grassy Key Marina sits on Marathon waterfront in Marathon, Florida. Water access includes Local waterways. Coordinates: 24.7684, -80.9444. Cross-reference current charts and NOAA notices to mariners before approach.
Amenities & utilities
- Slip rentals
- Dockmaster on duty
Docking Difficulty & Safety Insights
Docking conditions at Grassy Key Marina can change with vessel size, tide, current, wind, visibility, marina traffic, and slip location. Before arrival, confirm slip assignment, approach instructions, depth, power needs, and docking restrictions directly with the marina.
Marine weather at the slip
Wind, tidal current, tide, visibility, and a one-glance boating safety score.
Marine weather conditions near Grassy Key Marina can change quickly around inlets, bridges, exposed fairways, and narrow marina basins. Before arrival, check local wind, tide, visibility, current, and marine alerts, then confirm current conditions with the marina.
Plan your visit to Grassy Key Marina
Cross-reference docking risk, weather, fuel, hazards, fishing, and navigation — purpose-built tools for Marathon, Florida boaters.
Use this Grassy Key Marina profile to compare wet slips, transient dockage, depth, shore power, fuel, pump-out, liveaboard rules, amenities, and nearby boating resources before requesting availability. Before visiting, confirm slip availability, vessel size limits, draft requirements, arrival instructions, parking, security, liveaboard rules, transient policies, and any required documents directly with the marina.
Need help near this marina?
Use the marina's address to find nearby marine mechanics and places to stay. No GPS required.
Grassy Key Marina — Frequently asked questions
Where is Grassy Key Marina located?▼
Grassy Key Marina is located in Marathon, Florida on Marathon waterfront. Address: 59073 Overseas Hwy, Marathon, FL 33050, USA. Confirm the physical address with the marina before arrival.
Does Grassy Key Marina offer transient slips?▼
Yes — Grassy Key Marina reports transient dockage. Availability changes daily, so call ahead to reserve a slip.
Does Grassy Key Marina allow liveaboards?▼
Liveaboard policy at Grassy Key Marina is not confirmed here. Ask the marina directly whether liveaboards are permitted.
What is the maximum boat size at Grassy Key Marina?▼
Grassy Key Marina lists a maximum LOA of 60 ft. Larger vessels should call ahead to discuss slip fit, depth, and approach.
Is fuel available at Grassy Key Marina?▼
An on-site fuel dock at Grassy Key Marina is not confirmed. Plan to fuel at a nearby marina fuel dock if needed.
How do I contact Grassy Key Marina?▼
Contact information for Grassy Key Marina should be verified through the marina's own website or a marine directory before you arrive.
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