Vietnam and Malaysia are two established underwater-work markets in Southeast Asia, resting on offshore oil and gas, heavy port traffic, and a very active ship-repair industry. Access almost always runs through regional contractors and recognised international certifications, and the natural point of entry is usually Singapore.
When people talk about Southeast Asia as a commercial diving market, they're almost always talking about Singapore. That makes sense: that's where the regional contractors are based, along with a good share of the vessels. But the work itself, to a large extent, is carried out elsewhere. Two of the most consistent locations are Vietnam and Malaysia.
They're different markets from each other, with different industrial histories, and it's worth not lumping them together beyond geography. What they do share is a pattern of access: you get in through contractors, with international certification and provable prior experience.
Malaysia: oil, gas and a mature maritime industry
Malaysia has been producing hydrocarbons offshore for decades, and that has built a whole industrial chain around it: installation contractors, logistics bases, shipyards and repair yards. For commercial diving, that translates into three fairly stable types of demand.
The first is offshore facility maintenance and inspection: fixed structures, subsea pipelines, mooring systems and cathodic protection. It's recurring work, subject to multi-year inspection programmes, and it's the segment where documentation and certification demands are highest.
The second is harbour construction and maintenance. Malaysia has very heavy container traffic and several of the region's busiest ports, with everything that implies for quay inspection, dredging, fender maintenance and emergency work on vessels.
The third, less visible but constant, is servicio a buques: hull cleaning, propeller and rudder inspection, removal of tangled lines and afloat repairs. Wherever there are busy anchorages there's demand for this work, and in the region's straits there's demand for it year-round.
Vietnam: offshore energy and port growth
Vietnam has its own offshore hydrocarbon industry, with national operations and participation from international companies, and a long coastline with expanding ports. The result for underwater work is a combination of offshore maintenance, marine construction and vessel servicing that has grown alongside the country's industrialisation.
The energy component also adds growing interest in offshore wind, which several countries in the region have been folding into their energy plans. It's worth being cautious with timelines: offshore renewables project schedules shift a great deal, and what's just an announcement today can take years to generate real diving work. As a market reference, what is actually under way right now is maintenance of what's already been built.
How you get in: the role of the regional hub
The region's hiring pattern doesn't work through direct application to the local company. The usual route runs through regional contractors and the crewing agencies that work with them, many of which are based in Singapore. From there, teams are mobilised to operations across the whole region.
That has a practical consequence: for a foreign diver, showing up directly in Ho Chi Minh City or Kuala Lumpur rarely works. The realistic path is to get onto the books of the contractors and agencies that operate in the region, and wait for a mobilisation to come through.
There's a second, less obvious consequence: there's a solid local base of divers. Both countries have trained personnel with accumulated experience, and for harbour and vessel-servicing work, local competition is strong and runs on a very different cost structure. A foreigner tends to fit into the segment where they bring something specific — an in-demand speciality, an inspection certification, saturation experience — rather than into general work.
Certification: what's required in each segment
The practical rule is that the segment sets the requirement. In offshore oil and gas, international operators work to internationally recognised standards, and European and Australian certifications are the ones accepted without question. Inspection qualifications also carry a lot of weight there, opening doors on their own: the article on the underwater inspection diver explains that route.
In harbour and local work, the requirements are different and national schemes can be accepted, but holding a local qualification doesn't qualify you for international offshore work. Anyone planning to move between the two segments needs to factor that in from the start. A general comparison of certification schemes is in the article on which certification to choose and on the page on certifications.
One important warning: there's no automatic recognition of qualifications between countries in the region. What one contractor accepts, another might not, and what's valid for one client might not be for the next. Before investing in a course with a specific market in mind, it's worth confirming it with the companies you want to work for.
Working conditions
The water is warm all year round, which removes the thermal problem that dominates planning in northern European markets. That's not just about comfort: it lengthens the possible working windows and changes kit logistics, with less weight given to suits and heating.
In exchange, other factors come into play. The visibility is highly variable, and in harbour areas and river mouths it can be minimal, which turns the work tactile. The corriente is a serious factor in busy straits and heavily used channels. And the weather calendar rules: the monsoon regime governs offshore operating windows, and campaigns are planned around it.
Maritime traffic deserves a mention of its own. Working in busy anchorages or in the access channels to high-traffic ports demands strict control of the area, coordination with port authorities, and procedures that allow for the possibility of a vessel moving nearby. It isn't an abstract risk: it's the everyday hazard of vessel-servicing work in the region.
Language, multinational teams and life on board
In the offshore segment, English is the working language and teams are multinational by default. A single campaign can include personnel from Southeast Asia, India, Europe and Latin America, and the common language isn't anyone's native one. That demands a communication discipline that's learned fast: short sentences, confirming what's understood, and standard terminology on the panel and over the radio.
The practical consequence is that technical English stops being an advantage and becomes a requirement. You don't need conversational fluency, but you do need precision with work terminology and the ability to write an understandable report. It's one of the investments with the best return for anyone wanting to get into the region.
Life on board follows the international pattern: twelve-hour shifts, rotations set by contract, and mobilisation periods that can run long if the project falls behind schedule. The hot, humid climate adds its own wear, especially for deck work under the sun, and hydration and rest stop being recommendations and become part of risk management.
One thing that surprises people arriving from Europe is the distance. Operations can be many hours' flight from the point of hire, and a mobilisation means long travel before and after the campaign. That weighs on the decision to accept short contracts, and it's worth factoring in when weighing up an offer.
Pay and expectations
It's worth being realistic. In international offshore work, pay is set by the contract and the contractor more than by the country where the operation takes place, and rates move within the international market's range, depending on speciality and mode of work. In local work, on the other hand, conditions follow the country's own market and aren't comparable to European ones.
The article on how to negotiate the day rate and the page on what a diver earns cover the general logic; what's specific here is that you shouldn't assume the same job pays the same regardless of who's contracting.
Paperwork: don't improvise
Visas, work permits, accreditations and medical requirements change frequently in both countries and don't allow for assumptions. It's normal for the contractor or agency to handle the paperwork, but the responsibility for arriving with everything in order ultimately falls on the individual.
The recommendation is simple and applies to any destination: confirm the requirements with the hiring company and the relevant consular representation before buying a ticket, and don't rely on a colleague's experience from three years ago. The medical certificate is another point worth checking, since destinations vary in which format they accept.
Who this market makes sense for
Vietnam and Malaysia suit someone who already has experience under their belt and is looking for continuity of work in a region with stable activity. They're a poor fit as an entry point into the trade: it isn't a market where a newly qualified diver with no hours will easily find their first contract.
For someone building an international career, the sensible route is to get in through the regional hub, build up mobilisations, and let the region open up from there. The guide on how to get your first offshore job and the page on empleo cover that path in more detail.
Frequently asked questions
What certification is required in Vietnam and Malaysia?
International oil and gas operators usually require internationally recognised certification and work to IMCA criteria. In practice, European and Australian qualifications are the ones that open doors in the offshore segment. For local harbour work, national schemes may be accepted, but that doesn't qualify you for offshore work. It's worth confirming the exact requirement with the contractor before travelling.
Can you get in without prior experience?
It's not realistic. These are markets where access runs through contractors looking for people who are already operational, and where there's a local base of experienced divers. The usual route is to arrive with hours built up in another market and an in-demand speciality: inspection, welding, or saturation support.
Is there saturation work in the region?
There are saturation campaigns in Southeast Asia, but the market is organised mainly out of Singapore, where the main regional contractors and support vessels are based. Vietnam and Malaysia are operational destinations rather than hiring centres, so access usually comes through the regional hub.
How do you get the visa and work permit?
It's normally handled by the contractor or the agency doing the hiring, and requirements change frequently. No step should be taken for granted: confirm with the hiring company and the relevant consular representation before committing to any dates.
What environmental conditions should you expect?
Warm water all year round, which reduces the thermal problem but lengthens the possible working days. In exchange, there's variable visibility, current in strait areas, and a monsoon regime that governs offshore operating windows. Campaign planning in the region revolves largely around that calendar.
Published 8 September 2026 · By Arthur More, professional saturation diver
Photo: M McBey · CC BY via Openverse