Baia — Parco Sommerso di Baia
Baia submerged ruins · AMP Baia · Porto di Baia · Golfo di Pozzuoli
40°48.8'N 14°05.0'E
Depth
5–15m
Bottom
sand
Alarm Radius
100m
Holding
Fair holding
Recommended Anchor Alarm Radius
100m
100m in Zone C on sandy patches — verify bottom carefully before setting due to submerged archaeological material. Use Zone B mooring buoys (30–40m radius) if available. The Campi Flegrei volcanic zone means the seafloor here is geologically active — do not anchor directly over obvious hydrothermal vent bubbles.
About This Anchorage
The Parco Sommerso di Baia is one of the world's most extraordinary underwater archaeological sites — a complete Roman imperial city, including Nero's palace, the Temple of Mercury (which became a mosque under Arab occupation), thermal baths, villas, and streets, now submerged 2–15m under the Gulf of Pozzuoli due to centuries of bradyseismic ground movement. The above-water remains include the Castello di Baia (a Spanish-era castle with archaeological museum), and the Lago d'Averno (volcanic lake, mythical entrance to the underworld, used as a naval base by Agrippa). The AMP designation protects the submerged ruins; diving and anchoring are strictly controlled. Hydrothermal vents on the seafloor are a reminder that the entire Campi Flegrei caldera is geologically active — check INGV alert levels before visiting.
Protected From
E · NE · N · S
Exposed To
W · NW · SW
Setting Your Anchor
Anchoring on Posidonia oceanica meadows is prohibited throughout Italian waters and is actively enforced — fines range from €500–€3,000. Always snorkel to verify the bottom is clean sand before setting. In the AMP Parco Sommerso di Baia (Pozzuoli area), Zone A prohibits all entry, Zone B requires mooring buoys only, and Zone C permits limited anchoring on sand only. Check AMP zone maps before anchoring anywhere near Baia or Cape Miseno.
Anchoring Rules
- Anchoring fee
- Zone C: Free on sand (verify bottom). Zone B: mooring buoy fee applies (check current rates with AMP).
- Maximum stay
- 2 days
- Permit required
- Yes
- Permit details
- AMP Parco Sommerso di Baia permit required for Zone B anchoring/diving. Contact: parcobaia.it, +39 081 5265285, VHF Ch 16. Guided diving only with AMP-authorized dive operators (see AMP website for list). Glass-bottom boat tours are the primary visitor access method for Zone A/B.
- Mooring buoy fee
- Contact AMP for current mooring buoy fees (Zone B).
Restrictions: Zone A: No entry, no anchoring, no swimming (Integral Reserve). Zone B: Mooring buoys only — free anchoring strictly prohibited. Zone C: Anchoring on sand only — Roman ruins must not be disturbed; any contact with submerged archaeological material must be reported to AMP authorities. No spearfishing anywhere in the AMP. Hydrothermal vent areas: avoid anchoring directly over active vent clusters.
Hazards
- !Hydrothermal vents: Active gas vents and warm water plumes on the seafloor in the Pozzuoli/Baia area — do not anchor directly over visible bubbling; check INGV Campi Flegrei alert level before visiting
- !AMP zone violations: Entering Zone A or anchoring in Zone B without buoy is subject to heavy fines by the AMP authority patrol boats — carry current AMP zone map and buoy positions
- !Scirocco/Libeccio: The gulf of Pozzuoli is open to W/SW — Scirocco swell wrapping around Cape Miseno and Libeccio directly can make this anchorage uncomfortable in >F4
- !Ferry and hydrofoil traffic: Heavy traffic Naples–Procida–Ischia routes transit the outer approach; maintain clearance from ferry lanes
Skipper's Tips
- →Book the AMP glass-bottom boat tour in advance — this is the best (and in Zone A, only) way to see the submerged city without diving certification
- →The Castello di Baia museum (Museo Archeologico dei Campi Flegrei) displays remarkable finds from the submerged city including statuary, mosaics, and everyday objects — excellent context for what you see underwater
- →Pozzuoli (3nm E) is the main town for provisioning, fuel, and services — also visit the extraordinary Roman amphitheatre (Anfiteatro Flavio) and the Serapeum (Macellum, the Roman market whose columns show marine boring-worm marks proving the ground subsided then rose again in ancient times)
- →Check the INGV Osservatorio Vesuviano daily bulletin for Campi Flegrei seismic activity before visiting — current alert level and any area restrictions are published at ov.ingv.it
Facilities
Restaurants in Baia village and Pozzuoli town (3nm E) — excellent Campanian seafood and pizza. The Ristorante al Castello di Baia near the castle museum has good views.
Nearest provisions: Pozzuoli town (3nm)
Best Months & Season
May, June, July, August, September, October
May–October. The AMP is open year-round for glass-bottom boat tours. Diving season May–October. November–April: winter weather and potential geological activity monitoring periods.
Recommended Anchor Types
Nearby Anchorages
Set Your Anchor Alarm to 100m
In the Gulf of Naples, the Scirocco can build swell rapidly and ferry wash is constant. Safety Anchor Alarm monitors your GPS position continuously — alerting you the moment your anchor starts to drag.
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