Subsea works, underwater UXO clearance and hyperbaric operations.
SEMTEC, the subsea subsidiary of DEMINETEC Group, brings underwater inspection, marine UXO clearance and hyperbaric works expertise to the port and industrial community of Hanoi (Vietnam). Our Class II commercial divers — certified under French Decree 2011-45 (hyperbaric class B) and trained to NEDEX/EOD standards — operate on harbours, marine structures, ships' hulls and coastal areas contaminated by 20th-century conflicts.
Hanoi was the capital of North Vietnam and a primary target of U.S. air operations during the Vietnam War. Operation Rolling Thunder (1965-1968) and especially Operation Linebacker II — the 'Christmas bombings' of 18-29 December 1972 — saw B-52 strikes on Hanoi, Haiphong and surrounding industrial and transport infrastructure, leaving thousands of unexploded bombs (UXBs) in the Red River delta.
Vietnam is one of the most heavily UXO-contaminated countries in the world: an estimated 800,000 tonnes of ordnance remain in its soil. The Vietnam National Mine Action Centre (VNMAC) and provincial demining centres clear thousands of items every year, with strong partnerships from NPA, MAG, HALO Trust, the U.S. State Department (PM/WRA) and KOICA. Hotspots include Quảng Trị, Thừa Thiên-Huế and the former DMZ.
Hanoi's expansion — metro lines 2A, 3 and 5, Noi Bai airport expansion, Red River ring roads, Hoa Lac high-tech park — increasingly relies on pyrotechnic historical studies and magnetometric surveys, while offshore oil and gas projects in the Tonkin Gulf and South China Sea (Vanguard Bank) follow the same logic, aligned with IMAS standards and French Decree 2005-1325.
Pyrotechnic historical desk study (EHT) and safety study (ESP) for any harbour, river or submerged-works project around Hanoi.
Magnetometric survey of riverbanks, canals and inland water bodies in the region of Hanoi.
Technical works in any industrial facility with submerged basins, tanks or pipelines.
Class II/III diver surveys of inland infrastructure: dams, locks, intake structures.
Subsea pyrotechnic audits, owner's-engineering support and training of local crews.
In the strategic port of Hanoi, SEMTEC mobilises divers, observation ROVs and marine magnetometers to secure basins, jetties, approach channels and anchorages where 20th-century munitions still routinely lie on the seabed.
SEMTEC operates in Hanoi and across Vietnam from our French bases at La Seyne-sur-Mer (Var) and Wancourt (Pas-de-Calais), our Belgian office in Bruges and our Ukrainian site in Kyiv. Diving spread and naval logistics are mobilised on demand.
Yes. Riverbanks, canals, inland-port basins and reservoirs all fall within our remit. The region of Hanoi contains submerged sites of pyrotechnic interest linked to 20th-century conflicts.
Yes, through DEMINETEC Group. The parent company handles land areas while SEMTEC addresses submerged structures and wet zones on the same project.
Typically 5–15 working days depending on distance and logistics. For Hanoi, plan road transport of diving spread, ROV and mobile chamber.
Yes. SEMTEC holds hyperbaric class-B authorisations, MASE certification and works with a referenced hyperbaric occupational-health service.
For any survey, inspection or subsea intervention in Hanoi, contact our teams:
Tel: +33 (0)9 52 51 00 63
Email: contact@semtec-france.com