Saronic · Greece

Round Trips from Athens south (Alimos and Piraeus)


Here is where tracked sailing boats went on round trips from the bases in Athens south (Alimos and Piraeus) during the complete 2025 season. This is a record of past trips, not a guide to future trips.

Observed Positions

Heat map of observed hourly positions on round trips from Athens south (Alimos and Piraeus). Colour is relative within this map.
Observed hourly positions · one observed fix per boat-hour; missing hours omitted; colour is relative within this view.

Top Overnight Stops

  1. Poros 74%
  2. Aegina 50%
  3. Hydra 38%
  4. Spetses 29%
  5. Kythnos 22%
  6. Ermioni 21%
  7. Moni 17%
  8. Agistri 17%

The percentage is the share of trips that spent at least one night there.

Week Shapes

Each shape names the three places where a trip spent the most nights, so other stops may be left out. The percentage is the share of round trips from this area with at least four known nights away from base that had that shape.

  • 1. Aegina, Poros, Hydra 20% of these trips
  • 2. Poros, Spetses, Hydra 6% of these trips
  • 3. Aegina, Poros, Spetses 6% of these trips

First Nights

Aegina30%
Poros21%
Moni7%
Elsewhere42%

Last Nights

Aegina27%
Poros18%
Agistri9%
Elsewhere45%

Shares are of trips whose first or last night was recorded, respectively.

Furthest From Base

  1. under 20 nm 1%
  2. 20 to 40 nm 33%
  3. 40 to 60 nm 40%
  4. over 60 nm 26%

The furthest point reached on each trip, measured in a straight line from base in nautical miles. This is not the distance sailed.

Following Nights

For each favourite stop, this shows where boats spent the following night, as a share of those following nights.

After Poros
Aegina11%
Hydra10%
Ermioni7%
Spetses6%
Agistri6%
Stayed Another Night16%
Back to Base18%
Other Places25%
After Aegina
Poros24%
Hydra5%
Agistri3%
Palea Epidhavros3%
Moni2%
Stayed Another Night8%
Back to Base42%
Other Places12%
After Hydra
Poros25%
Spetses15%
Aegina9%
Ermioni5%
Baltiza5%
Stayed Another Night8%
Back to Base7%
Other Places25%
How We Worked This Out

We used AIS positions bought from Datalastic for the 2025 season, covering sailing yachts and catamarans based in the area. A trip is the nights away between two nights at base, so only round trips are included. A place is shown only when enough different boats went there, and no single boat can be picked out. Place names and coastline come from OpenStreetMap contributors.

Aggregated AIS ship-tracking data for the sailing area. No individual boat is shown, and these patterns do not predict future routes.

© OpenStreetMap contributors

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