Company lists · Data refreshed September 2026

Top 25 Marine and subsea consulting firms based in Indonesia

RevenueBase identified 290 marine and subsea consulting firms headquartered in Indonesia as of September 2026 and tracks 9,113 professional contacts across them, including 888 with verified work emails. Jakarta is the largest hub.

This list covers marine and subsea consulting firms headquartered in Indonesia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
290Companies
9,113Contacts tracked
888Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest marine and subsea consulting firms based in Indonesia

Ranked by team size
Top 25 of 290 marine and subsea consulting firms based in Indonesia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marine and subsea consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceKebayoran Lama, IndonesiaHQ checked Sep 28, 2026501-1,000972 contacts →

Partial evidence

“As a one-stop offshore marine services company, Wintermar Offshore Marine Group strives to support all types of offshore operations, offering innovative vessel and logistical…”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceKota Batam, IndonesiaHQ checked Sep 28, 20261,001-5,000609 contacts →

Indirect evidence

“Engineering Our Future Together”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceIndonesiaHQ checked Sep 28, 2026501-1,000563 contacts →

Indirect evidence

“PT Solusi Energy Nusantara (SENA) is affiliation of PGN Group, a reputable company which has a core business in natural gas distribution and transmission.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceAsean, IndonesiaHQ checked Sep 28, 2026501-1,000468 contacts →

Indirect evidence

“Synergy Engineering is a Multi-Disciplinary Design and Engineering Consultancy for various industries including the Oil & Gas, Power, Renewable Energy and General Industry.”

Source: RevenueBase Database · checked Sep 28, 2026
5Strong evidenceJakarta, IndonesiaHQ checked Sep 28, 202651-200339 contacts →

Strong evidence

“Java Offshore, established in 2010, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related solutions to marine…”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceBandung, IndonesiaHQ checked Sep 28, 2026201-500255 contacts →

Indirect evidence

“KWARSA HEXAGON is an independent consultant company founded in the year of 1982.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 2026501-1,000235 contacts →

Indirect evidence

“Pt singgar mulia, engineering consultant in oil, gas and energy industry”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 202651-200152 contacts →

Partial evidence

“Bintang Subsea - a DeepOcean Company - is a technology-driven, independent solution provider in the ocean space.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceJakarta, IndonesiaHQ checked Sep 28, 2026201-500137 contacts →

Partial evidence

“Pageo is a leading survey company providing survey, positioning and subsea services to the offshore oil & gas and offshore construction industries.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 202651-200133 contacts →

Indirect evidence

“PT.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 202651-20090 contacts →

Indirect evidence

“Hafar group is composed of a group of offshore business companies engaged in EPCI (Engineering, Procurement, Construction and Installation) Services, Vessel Owner and Operator.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceSenen, IndonesiaHQ checked Sep 28, 202651-20083 contacts →

Indirect evidence

“Part of the Meinhardt Group-' with a team of 170++ experts.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 2026201-50073 contacts →

Indirect evidence

“PT Tri Panji Puring is a multidisciplinary engineering company providing consultancy, engineering and project management services for energy industries.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceJakarta, IndonesiaHQ checked Sep 28, 202611-5072 contacts →

Indirect evidence

“Welcome to PT OPAC Barata, your guide through the petroleum jungle, delivering a wide range of services tailored to the unique demands of the oil and gas, mining, and geothermal…”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceNorth Jakarta, IndonesiaHQ checked Sep 28, 202651-20072 contacts →

Indirect evidence

“PT.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 202651-20065 contacts →

Indirect evidence

“PT.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceJakarta, IndonesiaHQ checked Sep 28, 202651-20063 contacts →

Partial evidence

“We are specialists in Dredging and Marine Engineering works.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceJakarta, IndonesiaHQ checked Sep 28, 202651-20060 contacts →

Indirect evidence

“PT Asiatek Energi Mitratama (AEM), established in 2017, is an independent engineering company providing leading edge engineering, design and consultancy services to the oil and…”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceBandung, IndonesiaHQ checked Sep 28, 202651-20055 contacts →

Indirect evidence

“Official website PT Dago Energi Nusantara.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceBatam, IndonesiaHQ checked Sep 28, 202611-5049 contacts →

Indirect evidence

“PT.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceJakarta, IndonesiaHQ checked Sep 28, 202651-20049 contacts →

Indirect evidence

“Oryx maintains a comprehensive inventory of national and expatriate consultants to support the professional expertise essential for today’s high standard requirements in a highly…”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceTangerang Selatan, IndonesiaHQ checked Sep 28, 202651-20048 contacts →

Indirect evidence

“PT Hydrocore an Indonesian company was established in 2006, have many experiences in geotechnical work (including Resistivity Survey) in Indonesia.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 202651-20042 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceBatam, IndonesiaHQ checked Sep 28, 202611-5041 contacts →

Indirect evidence

“PT.”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidenceJakarta Selatan, IndonesiaHQ checked Sep 28, 202611-5041 contacts →

Partial evidence

“PT Advanced Offshore Services is a trusted partner in the oil and gas industry, specializing in Subsea Engineering, Offshore Construction, Project Management, Diving, and ROV…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 290 marine and subsea consulting firms based in Indonesia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 888 reachable decision-makers.

Free signup · no credit card

View the full list →

Marine and subsea consulting firms based in Indonesia at a glance

As of Sep 28, 2026
9.7%Verified-email coverage
31.4Average contacts per company
11-50Median size (employees)
15.9%Largest-city concentration · Jakarta
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
59
11-50
127
51-200
65
201-500
22
501-1,000
9
1,001-5,000
6
10001+
2

Email recency for this list is measured worldwide rather than for Indonesia, so it is reported there. Company counts and contact totals on this page are exact for Indonesia, over 290 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marine and subsea consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Indonesia whose own description of what they do matches “marine and subsea consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names marine and subsea consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among marine and subsea consulting firms, and records with no verified work email. Companies headquartered outside Indonesia are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 888 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names marine and subsea consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many marine and subsea consulting firms are there based in Indonesia?

RevenueBase identified 290 marine and subsea consulting firms headquartered in Indonesia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Wintermar Offshore Marine TBK, headquartered in Jakarta, tops this list with the largest team on record.

Which city has the most marine and subsea consulting firms?

Jakarta leads with 46 headquartered companies, followed by Dki Jakarta (26) and Batam (24).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 888 verified decision-maker contacts tracked across these 290 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 290 marine and subsea consulting firms based in Indonesia. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.