Arratoon Apcar
Coral-encrusted iron hull and beams at 10-20 feet; 1878 Scottish steamer with visible mast, rudder, abundant fish.
Natural Attraction
At Fowey Rocks, 10 to 20 feet below the surface, lies the coral-encrusted iron hull of the Arratoon Apcar—a 262-foot Scottish-built steamer that ran aground in 1878 when Captain Pottinger miscalculated his position while sailing toward Havana. The vessel's 1,480-ton frame and 250-horsepower engine powered pre-modern Atlantic commerce until that February evening, when foul weather sealed its fate and the crew of 24 was rescued by a nearby ship. Today, snorkelers and divers encounter an underwater monument: iron beams and hull sections draped in living coral, with visible rudder and mast fragments marking where industrial-era engineering meets the ocean's relentless transformation into functioning reef.
Getting there & parking
- How To Get There
- Accessible by boat from Biscayne National Park docks. Located near Fowey Rocks Lighthouse at coordinates 25.591633°N, 80.095467°W. Requires navigation skills and knowledge of local boating regulations.
- Road Type
- Boat access only; no road access
- GPS Coordinates
- 25.591633, -80.095467
When to go
- Best Time To Visit
- Mid-morning to mid-afternoon for optimal natural light penetration to 10-20 foot depth. Calm surface conditions improve underwater visibility.
- Best Visit Times
- Weekdays; early morning departures for calmer morning conditions and fewer crowds
- Sunrise Sunset Quality
- Midday sun provides optimal light penetration underwater for viewing and photography; sunrise and sunset offer more oblique angles useful for silhouette compositions
- Best Season
- Winter through early spring (December-April) for calmer sea conditions and more stable diving weather
- Seasonal Access
- Year-round, weather and sea conditions permitting
- Winter Access
- Year-round by boat; winter sea conditions may limit access. No winter-specific equipment needed beyond standard diving or snorkeling gear.
- Weather Patterns
- Summer: afternoon thunderstorms common, warmer water (~82°F). Fall: Atlantic hurricane season. Winter-Spring: generally better boating and diving conditions, cooler water (~72°F). Currents and sea state variable year-round.
What you will experience
- Attraction Type
- Underwater Shipwreck
- Main Features
- Coral-encrusted iron hull and structural beams; visible rudder and mast remnants; abundant marine fish and coral growth
- What Youll See
- Coral-covered iron hull and steel beams; oxidized metal surfaces with 145+ years of corrosion; rudder and mast sections; schooling fish; coral and algae-covered wreck structure
- Unique Characteristics
- 19th-century Scottish-built iron steamer (launched 1861); ran aground February 20, 1878; rare in-situ example of early industrial maritime technology now serving as functioning artificial reef; demonstrates marine biota colonization of anthropogenic structures
- Photo Opportunities
- Wide-angle shots of hull and beams with fish schools; detail photography of coral encrustation and metal oxidation surfaces; silhouettes with overhead sunlight; fish behavior around the wreck
- Photography Spots
- North side of wreck for silhouette and wide-angle compositions; south side for rudder detail shots; central mast and beam sections for structural photography
- Best Viewpoints
- Directly at the wreck site at 10-20 feet depth; swim around the entire structure for various viewing angles
- Common Wildlife
- Abundant fish populations; coral and marine invertebrates typical of South Florida reef ecosystems; groupers, snappers, jacks, rays; sea turtles possible
- Best Wildlife Times
- Year-round; specific seasonal abundance patterns not documented
- Geological Formation Type
- Shipwreck serving as artificial reef
- Scientific Interest
- 19th-century iron steamer exemplifies early industrial maritime technology; site demonstrates marine biota colonization of anthropogenic structures and iron oxidation/corrosion processes in saltwater; maritime archaeology interest
- Stargazing Quality
- Excellent (offshore location with minimal light pollution); limited practical application for this daytime diving-focused site
Facilities, fees & access
- Entry Fees
- No entrance fee to Biscayne National Park
- Permits Required
- No
- Restrooms Available
- No
- Picnic Areas
- No
- Water Available
- No
- Cell Service
- Minimal to unavailable
- Interpretive Signs
- No
- Accessibility
- Boat access only; 10-20 feet underwater requiring snorkeling or diving skills; no road or trail access
- Accessibility Level
- Boat access required; recreational snorkeling to diving expertise needed
- Nearby Facilities
- Boat launch and visitor facilities available at Biscayne National Park; specific facilities at Fowey Rocks area unknown
- Family Friendly Notes
- Children can snorkel with adult supervision in calm conditions; diving not recommended for young children. Strong currents may be present. Life jackets/PFDs recommended for boat transit. Water-confident swimmers and experienced snorkelers only.
Safety
- Safety Considerations
- Strong currents possible at Fowey Rocks—consult current forecasts and tide tables. Sharp edges and deteriorating metal sections on wreck pose cut hazard. Maximum safe snorkeling depth ~20 feet; nitrogen narcosis risk for deeper dives. Subject to sea and weather conditions; check forecasts before boating.
Nearby
- Nearby Attractions
- Fowey Rocks Lighthouse; nearby shipwrecks including Alicia, Erl King, Lugano, and Mandalay; 19th Century Wooden Sailing Vessel
- Connecting Trails
- None (marine site only)
- Trailheads Here
- None (marine site only)
Planning advice
- Insider Tips
- Check local current forecasts and tide tables; plan dives around slack tide for safer conditions.
- Coral health is important—observe without touching or collecting; responsible diving helps preserve the site.
- Fowey Rocks Lighthouse nearby serves as navigation reference point.
- Abundant fish and coral provide excellent marine biology viewing opportunities.
- Winter water temperature ~72°F; summer ~82°F; plan exposure protection accordingly.
- Bring polarized sunglasses for boat transit; they help spot the wreck area from surface.
- Tips Advice
- Wreck lies 10-20 feet deep; suitable for recreational snorkeling and diving with appropriate skills and equipment.
- Current at Fowey Rocks can be strong; plan dives around slack tide when conditions permit.
- Coral encrustation is living ecosystem—observe without touching. Do not collect souvenirs.
- Sharp metal edges and deteriorating metal sections present—maintain buoyancy control and watch for cuts.
- Fowey Rocks Lighthouse nearby serves as navigation landmark and surface reference point.
- Abundant fish populations provide excellent marine biology viewing; bring underwater camera.
More details
- Park Area
- Fowey Rocks
- Elevation Feet
- -15
- Visitor Center Present
- No
- Guided Tours Available
- No
- Fishing Nearby
- Yes
- Swimming Allowed
- Yes
- Boating Allowed
- Yes
- Climbing Areas
- No
- Review Summary
- Visitors appreciate this site for its accessible depth (10-20 feet) and well-preserved 19th-century wreck structure with abundant marine life. The site clearly conveys historical maritime context while showcasing natural coral encrustation and biological colonization processes. Requires understanding of diving/snorkeling prerequisites and strong commitment to marine site respect.
Location
Frequently asked questions
Is it safe to snorkel or dive here, and what are the main hazards?
Yes, with proper precautions. Depth is 10-20 feet—manageable for snorkelers and divers. Main hazards are strong currents at Fowey Rocks (plan dives for slack tide) and sharp metal edges on the deteriorating hull. Stay aware of your depth limits and training level.
Can I see the wreck on a snorkel, or do I need diving certification?
Snorkeling works in calm conditions at 10-20 feet; certification not required but improves safety and comfort. Strong swimmers can snorkel upper sections. Certification allows deeper exploration, longer bottom time, and access to lower wreck features.
What makes this wreck special or worth the boat trip?
The Arratoon Apcar (1861 Scottish iron steamer) is a rare preserved example of 19th-century industrial maritime technology now colonized by living coral—a functioning reef ecosystem. You're seeing engineering history and marine biology simultaneously.
What's the visibility like, and will I be disappointed by what I see?
Visibility typically 20-50 feet depending on season and weather. You will see the iron hull, beams, rudder, and mast fragments clearly, plus abundant fish and coral. It's a functional industrial wreck, not a pristine tropical scene, but visually striking.
What's the best time of year to visit?
Winter through early spring (December-April) offers calmer seas and better diving weather. Summer brings warmer water but afternoon thunderstorms and rougher conditions. Fall carries hurricane-season risk. Year-round access weather permitting.
Do I need special training or expensive gear?
Standard snorkeling gear (mask, fins, snorkel) works for shallow viewing. Diving requires certification. Check current forecasts before going. An underwater camera or GoPro lets you record the experience.
More at Biscayne National Park
Fowey Rocks Lighthouse
Five miles offshore, a solitary 50-foot tower marks Miami's deadliest reef. Built 1875, still the "Eye of Miami."
Sources
- National Park Service
- YourNPGuide Editorial
Editorial review: YourNPGuide Editorial Team. Information is compiled from official sources, verified traveler reviews, and editorial research; no firsthand visit is implied unless explicitly documented. Learn how YourNPGuide works.
Last updated July 2026. Report an issue.