Grignano — Gulf of Trieste Anchorage
Baia di Grignano · Miramare anchorage · Golfo di Trieste
45°42.2'N 13°42.6'E
Depth
4–12m
Bottom
sand
Alarm Radius
100m
Holding
Fair holding
Recommended Anchor Alarm Radius
100m
100m in 5–10m due to fair holding on mixed bottom — set with care and verify. The Bora (NE katabatic) is the defining hazard of the Gulf of Trieste, capable of reaching 60–130 km/h. On any Bora forecast, vacate immediately to Muggia Bay (more sheltered) or the Trieste marina. 100m radius gives margin for any anchor slip in early Bora conditions.
About This Anchorage
Grignano offers the most dramatic anchorage setting in the Northern Adriatic — beneath the fairy-tale white neo-Gothic Castello di Miramare (1860), built for Archduke Maximilian of Austria on a rocky promontory jutting into the Gulf of Trieste. The Miramare Marine Reserve (Area Marina Protetta) surrounding the castle is one of Italy's oldest (established 1986) — the crystal-clear, cold Adriatic water supports exceptional marine life including octopus, scorpionfish, and Posidonia meadows. The Riserva Naturale di Miramare has strict Zone A (no entry) around the castle rocks. The setting is spectacular but the Bora is a serious hazard — never stay overnight here if Bora is forecast.
Protected From
S · SW · W · SE
Exposed To
N · NE · NW
Setting Your Anchor
Anchoring on Posidonia oceanica meadows is prohibited throughout Italian waters under the EU Habitats Directive and is actively enforced — fines range from €500–€3,000. In the Venice Lagoon, always navigate within marked channels (bricole); mud banks outside channels can be as shallow as 0.3m. In AMP zones throughout Italy, check for Zone A/B/C designations before anchoring.
Anchoring Rules
- Anchoring fee
- Free outside the AMP Zone A boundary.
- Permit required
- No
- Mooring buoy fee
- Mooring buoys available within the AMP (buoy fees apply, approximately €10–€25/night).
Restrictions: AMP Miramare: Zone A (around the castle rocks) — no entry, no anchoring. Anchoring on Posidonia prohibited. Use mooring buoys where available in Zone B. No spearfishing. No anchoring within 50m of Posidonia meadows (national rule). Check AMP zone map before anchoring.
Hazards
- !Bora (NE katabatic): The most severe Bora in the Adriatic strikes the Gulf of Trieste — wind speeds of 60–130 km/h regularly recorded at Trieste; the anchorage at Grignano is directly exposed; NEVER stay here if Bora is forecast; Bora can develop within 30 minutes with almost no warning
- !AMP Zone A boundary: The Zone A around the Miramare castle rocks must not be entered; boundary is marked but verify with current AMP chart
- !Mixed bottom holding: Sand patches over rock with weed patches give unreliable holding — confirm anchor is set on sand (dive check recommended in calm conditions)
- !Jellyfish: The Gulf of Trieste experiences periodic jellyfish blooms (Pelagia noctiluca) that make swimming and dinghy landing unpleasant
Skipper's Tips
- →Visit Miramare Castle — open to visitors by land (bus from Trieste) and by dinghy landing at the small harbour; the interior and grounds are magnificent
- →Trieste's border position (Slovenia begins 5km from the city) gives it a unique Habsburg-Slavic-Italian culture — the coffee culture, the Jota stew, and the Carso wines are unique to this corner of Italy
- →The Gulf of Trieste in July–August in light S/SW sea breeze offers excellent racing conditions — the Barcolana regatta (second Sunday of October) is one of the world's largest sailing races, held right here
- →Monitor Osservatorio Meteo Trieste and Arso (Slovenian met service) for Bora forecasts — local NE wind reports are more accurate than general Mediterranean GRIB files for Bora onset
Facilities
Small bar/restaurant at Grignano harbour (Ristorante al Porto di Grignano). Trieste (5nm by sea or 10 minutes by bus) has outstanding restaurants and cafés — the Viennese coffee house tradition (Caffè San Marco, Caffè degli Specchi) is unique in Italy.
Nearest provisions: Grignano/Miramare village (0.3nm)
Best Months & Season
June, July, August, September
June–September for fair conditions. Bora is most severe November–March but can occur any month. October: Barcolana regatta season — spectacular but very busy. July–August: pleasant sailing but always with Bora eye.
Recommended Anchor Types
Nearby Anchorages
Set Your Anchor Alarm to 100m
In the Northern Adriatic, the Bora can build from calm to 60+ km/h while you sleep. Safety Anchor Alarm monitors your GPS position continuously — alerting you the moment your anchor starts to drag.
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