Caribbean Seastead Research
Your Mobile Seastead as a Fish Aggregating Device
A comprehensive analysis of how your tensegrity seastead design can function as an effective FAD for sustainable family fishing in Caribbean waters.
Submerged Floats
20' long each
sq ft of Shade
Above water platform
Days to Attract Fish
In optimal conditions
Hours to Catch Fish
Average for 5+ lbs
Why Your Seastead Will Work as a FAD
Fish Aggregating Devices work because pelagic fish are instinctively drawn to structure in open water. Your seastead design has several key FAD elements that will attract fish:
Shade Structure
The 16' x 40' living area creates a substantial shadow on the water below. Many fish species, especially mahi-mahi and tuna, are drawn to shade as it provides protection from predators and a visual reference point.
Vertical Structure
The 4 floats extending down at 45 degrees, plus all the cables, create vertical structure in the water column. This is crucial - fish use structure for orientation and hunting.
Surface Disturbance
The floats and cables create subtle water movement and surface ripples. This mimics natural feeding conditions and attracts curious predators.
FAD Attraction Elements
Key insight: Traditional anchored FADs in Anguilla work despite strong currents. Your structure will create similar attraction zones, especially when stationary or moving slowly.
Biofouling: Let Nature Help
Should You Let Growth Accumulate?
Yes, absolutely. Duplex stainless steel is highly corrosion-resistant, and controlled biofouling will significantly enhance your FAD effectiveness. Here's why:
Food Chain Foundation
Algae and barnacles attract small baitfish, which attract medium predators, which attract the game fish you want to catch.
Natural Camouflage
Fish are more attracted to natural-looking structure than shiny metal. Growth makes your floats look like natural reef elements.
Scent Trail
Biofouling organisms release amino acids and other compounds that create a chemical attractant plume in the water.
Habitat Complexity
Textured surfaces with growth provide hiding spots for smaller fish, increasing the overall ecosystem around your seastead.
Biofouling Timeline
Week 1-2
Slime film develops - bacterial and diatom colonization begins
Month 1-2
Green algae and early barnacle settlement visible
Month 3-6
Established fouling community - barnacles, tube worms, bryozoans
Year 1+
Mature ecosystem - consider partial cleaning to maintain balance
Maintenance tip: Annual cleaning is reasonable. Don't scrub completely clean - leave some established growth. Focus on areas affecting propulsion.
Movement: Stationary vs. Mobile
This is the critical question for your mobile seastead. How does movement affect FAD effectiveness?
Stationary / Drifting
Fish can orient to the structure and establish territories
Biomass accumulates over time - better each day
Scent trail builds up in the area
Similar to traditional anchored FADs
Best for: Extended stays, maximum fish accumulation
Moving at Speed
Most fish will flee or not follow at 1 MPH sustained
No time for attraction to build
May still attract following fish at slower speeds
Prop wash may attract some species briefly
Challenge: 1 MPH is too fast for most FAD species to follow
Speed Impact on Fish Behavior
| Speed | Fish Response | FAD Effectiveness | Recommendation |
|---|---|---|---|
| 0 MPH (stationary) | Full aggregation behavior | Maximum | Best for fishing |
| 0.25 MPH (very slow drift) | Most fish remain associated | Excellent | Good for transit + fishing |
| 0.5 MPH (slow transit) | Some fish follow, some leave | Moderate | Acceptable compromise |
| 1.0 MPH (normal transit) | Most fish will not follow | Low | Transit only, stop to fish |
Practical recommendation: Plan your routes with regular stationary periods. Even 4-6 hours of stopping can allow fish to find and aggregate around your structure. The 0.5 MPH speed is a good compromise - you'll lose some fish but retain others.
Timeline: How Long Until Fish Arrive?
Based on Caribbean FAD research and local Anguilla fishing experience, here's what to expect when you stop in a good location:
First Visitors
Curious jacks, small tuna, and baitfish begin investigating the structure. These "scout" fish are often the first to find any new object in the water.
Building Activity
Mahi-mahi (dolphinfish) may arrive, especially if you're in good water. Blackfin tuna and skipjack tuna often show up in this window.
Established Community
A real fish community forms around the structure. Larger predators like wahoo and larger mahi-mahi may be hunting the baitfish that have gathered.
Mature FAD
Peak aggregation. Similar to established FADs off Anguilla. Consistent fishing possible. This is when you'll have your best luck for larger fish.
Factors That Speed Up Attraction
Deep water (500m+)
More pelagic species nearby
Current edges
Fish travel along current boundaries
Temperature breaks
Even 1-2 degree differences attract fish
Morning/evening
Peak feeding times = more activity
Existing biofouling
Growth on floats = instant attraction
Location Strategy for the Caribbean
Distance from Land
For Caribbean waters around Anguilla, here are the guidelines for FAD placement:
Too shallow, reef fish dominate, fewer pelagics. OK for snapper and small jacks but not ideal for your FAD goals.
Some pelagic activity, especially during migrations. Better than close to shore but not optimal.
This is where most commercial FADs are placed around Anguilla. Water depth typically 1000-3000m. Best for mahi-mahi, tuna, wahoo.
Anguilla context: The island shelf drops off quickly on the south side. The north side has a longer shallow shelf. For best FAD results, head south into deeper water.
Water Depth Considerations
Unlike anchored FADs that are limited by anchor scope, your mobile seastead can position anywhere:
Pro tip: Your underwater cameras will help you identify when you're in productive water. If you see baitfish on the cameras within 30 minutes of stopping, you're in a good spot. If not, consider moving a few miles.
Practical Fishing Tips
Night Lights
Absolutely use them. LED lights shining into the water at night attract plankton, which attracts baitfish, which attracts game fish.
Best practice: White or green LEDs, run from dusk until you're done fishing or ready to sleep. Try to fish the "shift change" at dawn.
Chumming with Scraps
Yes, use fish scraps! The scent trail brings fish in and triggers feeding behavior.
Timing: Start fishing 5-15 minutes after tossing scraps. The fish will be in a feeding mood. Don't over-chum or they'll get full.
Best Times of Day
Dawn and dusk are prime time. Fish are actively feeding and more catchable.
Underwater Cameras
Excellent idea. They'll tell you when fish are present and what species are around.
Pro tip: If cameras show small baitfish but no predators, wait. If you see larger fish, get your lines in the water immediately.
Simple Rig Setup
For Caribbean FAD fishing, you don't need complex gear. Keep it simple.
Basic setup: 30-50 lb braided line, wire leader (for toothy fish), 5/0-7/0 hook, and frozen ballyhoo or artificial lure. That's it.
Target Species
Around Anguilla FADs, expect these species:
Realistic Daily Expectations
You asked how long it should take to catch one 5+ lb fish per day. Here's an honest assessment based on Caribbean FAD fishing data:
with established FAD
Stationary 2-3 days, good location, right time of day
newly arrived (1 day)
Good location, stationary overnight, patient fishing
while moving
Fish may be present at slow speeds, but expect to stop and wait
Why It Can Be So Fast
FAD fishing in the Caribbean is often incredibly productive. The fish are already there, attracted to the structure. You're not searching for fish - you're fishing where fish are concentrated. A simple cast with a jig or live bait can hook up within minutes when conditions are right.
Why It Might Take Longer
Bad timing (mid-day in full sun), wrong location (too shallow or in unproductive water), recent fishing pressure (fish have been caught or spooked), or seasonal patterns (some months are better than others). Don't get discouraged - the fish will come.
Summary: Making Your Seastead a Successful FAD
Your design works: Shade + floats + cables = good FAD structure
Let biofouling grow: Clean annually but don't strip completely
Stop to fish: Stationary periods are essential for aggregation
Go deep: 5+ miles offshore in 500m+ water is ideal
Use lights at night: Attract baitfish = attract gamefish
Fish dawn/dusk: Best feeding times for consistent success
Trust your cameras: They'll tell you when to fish
Be patient initially: 2-3 days stationary = best results
With good practices, catching one 5+ lb fish per day is very achievable for a family living on your seastead.