Anchorage GuideNorth Aegean — Thasos, Greece6nm from Limenaria (south Thasos)

Alyki Anchorage Guide

Also known as: Aliki, Alyki Bay, Alyki Peninsula

Alyki is arguably the most beautiful anchorage on Thasos — a double-sided marble peninsula on the south coast where ancient Thasian marble quarries meet a turquoise sea. The peninsula is protected as an archaeological site under Greek Law 3028/2002: the quarry marks (rope grooves worn into the white marble) are still clearly visible, and a small Early Christian basilica ruin stands on the promontory. Two white-sand coves flank the peninsula, giving sailors the rare option to choose which side to anchor based on wind conditions. The water clarity is exceptional — 20–25m visibility on a calm day. One of the finest swimming and snorkelling spots in the North Aegean.

Quick Reference

GPS Coordinates

40°36.8'N 24°45.2'E

Depth

36m

Bottom

sand

Holding

Good Holding

Protected From

N, NW, W, SW

Exposed To

E, SE, S

Best Months

May, June, July, August, September

Anchoring Fee

Free

Permit Required

No

55m

Recommended Anchor Alarm Radius

55m for the main west bay in 3–6m on clean sand. Good holding in the sandy seabed. Open to E and SE — monitor for afternoon sea breeze. In settled NE meltemi this bay is comfortable; move to east cove (50m alarm) if S wind develops. Avoid anchoring within 50m of the marble shoreline — archaeological zone protection.

West bay — main anchorage: 55m recommended — The west bay of the Alyki peninsula anchors on clean white sand at 3–6m with good holding.

East cove — calmer in S winds: 50m recommended — A smaller cove on the east side of the Alyki peninsula, slightly more sheltered in southerly conditions.

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Anchoring Zones

Alyki has 2 distinct anchoring zones, each with different depth, holding, and exposure characteristics. Choose the zone that matches your boat size and the expected overnight conditions.

Zone 1: West bay — main anchorage

  • Depth: 36m
  • Bottom: sand
  • Holding: Good Holding
  • Protected from: N, NW, W, SW
  • Exposed to: E, SE, S
  • Recommended alarm radius: 55m

The west bay of the Alyki peninsula anchors on clean white sand at 3–6m with good holding. Sheltered from N and NW — effective in the NE meltemi. The marble-white shoreline and ancient quarry ruins create an extraordinary visual setting. Archaeological restrictions apply to the peninsula itself — anchor only in designated water areas and observe posted signs when landing.

Zone 2: East cove — calmer in S winds

  • Depth: 35m
  • Bottom: sand
  • Holding: Good Holding
  • Protected from: N, NE, NW, W
  • Exposed to: E, S, SE
  • Recommended alarm radius: 50m

A smaller cove on the east side of the Alyki peninsula, slightly more sheltered in southerly conditions. Sandy bottom at 3–5m. The two coves on either side of the marble peninsula allow choice of anchorage based on wind direction — an unusual and practical feature.

Setting Your Anchor

The bottom at Alyki is primarily sand with reliable holding when properly set. Use the following approach:

  1. Approach slowly and check your depth sounder on the way in. At 36m, deploy at minimum 7:1 scope (42m chain at 6m depth).
  2. Drop into the wind or current and pay out chain steadily as the boat drifts back — do not allow chain to pile on the anchor.
  3. Set firmly in reverse. Apply moderate throttle astern for 30–60 seconds. The chain should tighten without the boat moving backwards.
  4. Take a GPS bearing. Note your position once set and compare to the scope calculator to confirm you have adequate chain for the depth.

Recommended anchor types for this bottom: Rocna, Mantus, Delta. See our guide to anchor types by bottom for detailed comparisons.

Overnight Anchoring & Anchor Alarm

Overnight stays at Alyki are feasible but require monitoring. The anchorage is exposed to E and SE and S winds.

Set your GPS anchor alarm to 55m radius before going below for the night.55m for the main west bay in 3–6m on clean sand. Good holding in the sandy seabed. Open to E and SE — monitor for afternoon sea breeze. In settled NE meltemi this bay is comfortable; move to east cove (50m alarm) if S wind develops. Avoid anchoring within 50m of the marble shoreline — archaeological zone protection.

May–September. May and early June are the best months — crystal water, no crowds, archaeological site essentially to yourself. July–August is busier but the anchorage is large enough to accommodate. September is excellent. Avoid in persistent S or SE winds as both coves become uncomfortable.

Navigation Hazards

  • Archaeological zone — stay clear of the marble peninsula when landing and follow posted signs; the site is inspected and violations are taken seriously
  • Exposed to E and SE: afternoon sea breeze can build from the SE in summer; both coves allow you to switch to the more sheltered side
  • Busy in July–August mid-day with day-tripper boats from Limenas and Potos — arrive early morning for best anchorage position and clear water
  • Snorkelling near the marble shoreline: rocks and marble slabs at the water's edge are slippery — take care when entering/exiting the water

Rules & Regulations

  • Permit: Not required beyond standard Greek DEKPA transit log
  • Anchoring fee: Free
  • Restrictions: DEKPA and TEPAI required. Archaeological zone on the peninsula — observe posted signs. Do not land on the quarry platform or disturb the ruins. Anchoring in the water areas of both coves is permitted. Stay 50m clear of the marble shoreline. No campfires on shore.

For a full overview of Greek anchoring rules, see our overnight anchoring rules by region guide.

Facilities

  • Fresh water: Not available on site
  • Fuel: Not available — nearest: Potos (south Thasos) (4nm)
  • Restaurant: Small seasonal beach bar/restaurant on the western shore (June–September). Basic food and drinks. No provisions beyond snacks.
  • Provisions: None on site — Potos (south Thasos) (4nm)

Skipper's Tips

  1. Anchor in the west bay in NE meltemi (sheltered), switch to east cove if S wind develops — the dual-sided peninsula is a rare and practical advantage
  2. Best snorkelling: along the marble shoreline below the ancient quarry where rope grooves descend into the water — extraordinary historical and visual experience
  3. Arrive before 09:00 in July–August to anchor before the day-trip boats arrive and crowds build on the beach
  4. The ancient rope grooves in the marble — worn smooth by Thasian quarrymen 2,500 years ago — are one of the most extraordinary human-made features you can see directly from a snorkel

A note on this guide: The data in this guide has been researched from multiple sailing sources and is provided in good faith. Anchorage conditions — including depth, holding, and local regulations — can change. Before visiting, always check current weather forecasts, NAVTEX and VHF weather bulletins, and consult your up-to-date charts. Use a GPS anchor alarm and never rely solely on a guide for navigational decisions.

Sleep peacefully at Alyki

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