PERMIT: IMO-AD-2026-0744UNESCO Underwater Cultural Heritage ProtocolCOMPLETED

Andrea Doria Deep Wreck Survey

Nantucket Shoals Continental Shelf (North Atlantic Ocean (40°29′N 69°51′W), International Waters / US EEZ) • Base Hub Research Vessel Deep Discovery (Surface) (0m)

Total Declared

2

38.5 kg gross

Return Rate

100%

2 units brought back

Verified Clearance

100%

2 ranger certified

Recovery Status

0 cases

0 retrieved

Technical & Wreck DivingProtocol: UNESCO Underwater Cultural Heritage Protocol

Bathymetric Ocean Depth Profile

Decompression ceilings, thermoclines, and seabed wreck penetration

Wreck Seabed Depth-75m
ATLANTİK OKYANUSU SU YÜZEYİ (0m)-6m O2 Barı-21m Nitrox Barı-75m ATLANTİK KUM TABANISS ANDREA DORIARV Deep Discovery DeckOxygen Deco Habitat Nitrox Deco Station Promenade Hull Entrance Seabed Debris Field Onboard Weigh & Heritage Station
STAGE NODE #6Onboard Weigh & Heritage Station[Aft Deck Scale Bay]

Final official audit station. All returning gear undergoes biometric tare weighing and digital passport signing.

Elevation / Depth0m
Custody Requirement100% Retrievable

Route Information & Operational Protocol

Trimix CCR deep penetrations to -75m. 100% verified material return of lead weights, stage bottles, and marker buoys.

Operating Season:

2026-08-01 to 2026-08-28

Authorized Operator:

Global Tech Diving Explorers

Team Size:

10 Guides & Field Crew