Seabed surveys and baselines for bidders on India's offshore mineral blocks
TL;DR Benthicore plans and runs seabed surveys for companies bidding on, or holding, India's offshore mineral blocks. It charters vessels and underwater robots, adds an environmental baseline, and turns the data into maps a mining plan and a regulator can use. Bidders pay per project.
India now auctions offshore minerals. The first tranche in November 2024 offered 13 blocks: lime mud off Gujarat, construction sand off Kerala and polymetallic nodules near Great Nicobar[1]. Winners must explore further before they can mine[1].
The data is thin. The Geological Survey of India ran only geomagnetic observation surveys over the Nicobar nodule blocks, and no reserve estimate was published for them[3]. Interest was weak, and the government cancelled that auction in December 2025[2].
Fishers in Kerala marched against the sand blocks, saying more than 25,000 livelihoods are at stake[3]. So a bidder faces two gaps at once - not enough geology, and no credible environmental baseline.
What it does, in regulatory terms: survey and baseline data for licence holders. Benthicore does not mine and holds no mineral rights. Its clients apply under the Offshore Areas Mineral (Development and Regulation) Act, 2002 and its auction rules[2].
Benthicore sells a fixed-scope package per block. It plans the survey and charters a vessel with multibeam sonar, an autonomous survey vehicle and a sampling ROV, and teams collect sediment and habitat samples alongside the geology. Software classifies seabed types from sonar and video, and geologists check the output.
What does the bidder get? A seabed map, a sample log, a habitat baseline and a data room it can show lenders and regulators.
The seed wanted swarms of robots exploring the deep sea, and I reframed it. India has very few buyers for that today, and building a swarm would burn years. The paying need is narrower and nearer - survey work for a handful of blocks, done well, with equipment rented and not owned.
The buyers are mining companies, cement makers interested in lime mud, and construction-sand suppliers bidding on blocks. They pay per project, and the price depends on vessel days, which make up most of the cost.
I found no published price for an Indian offshore mineral survey. Offshore oil and gas shows the model exists though - the state oil major's operations contractor hired a large European survey firm for a three-year ROV inspection contract in 2020[4].
On 24 September 2026 the ministry cut the minimum number of qualified bidders from three to two and opened two new Andaman nodule blocks covering 1,632 sq km[2]. Indian marine robotics is growing up too - one Indian ROV maker raised ₹13 Cr in February 2026 and holds a ₹47 Cr Navy contract[5]. India's own deep-sea nodule exploration contract with the International Seabed Authority runs to March 2027[6].
There's no public figure for what India spends on offshore mineral surveys. The narrow signal is the block count, 13 blocks in the first tranche[1] and two more in 2026[2].
Some blocks have reserve estimates, like 302 million tonnes of sand off Kollam and 1,712 million tonnes of lime mud off Porbandar[3]. Treat these as signs of possible projects, not revenue.
Large European survey firms already work offshore India for oil and gas[4]. The Geological Survey of India and national institutes do government surveys. Indian marine robotics firms focus on inspection and not mineral survey[5].
The gap is an Indian survey integrator sized for small mineral blocks, which global firms may well price too high.
| Difficulty | Hard (70/100) |
| Starting capital | ₹3–6 Cr |
| Time to launch | 12–18 months |
Every project hangs on vessel availability, weather windows and sea state. You need survey geophysicists, marine biologists and offshore safety systems from the very first job. Above all, demand depends on auctions that have already failed once, so your cash has to last through quiet years and there may be a few of those.
Benthicore needs no mineral licence of its own, but it only works under clients who hold one.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't let AI make the call on resource estimates or habitat impact. Lenders and regulators will rely on these, so qualified geologists and biologists must check and sign them.
Want to work out the AI layer for Benthicore? Talk to Yash →
Here's what can go south -
This one is only for a founder from offshore survey or marine geology who has relationships in mining. And do not build hardware, full stop.
Before you spend on vessel days, prove one thing - two serious bidders for the 2026 Andaman blocks would pay for a pre-bid desk study and survey plan.
Plan for about ₹3–6 Cr. Charter vessels and partner equipment rather than building hardware, and most of the money goes on people and vessel days.
Your clients hold the composite licence under the 2002 Act and you work under their permissions. Environmental clearance needs checking with a consultant.
Yes, wherever offshore minerals are auctioned. Check that country's mining law and whether international seabed rules apply.
The free Benthicore validation kit has the line-by-line capital breakdown, the effort scoring, the licensing and environmental checklist, a 14-day validation sprint with pass/fail targets, a 90-day launch plan, 10 interview questions for bidders and survey partners, and 5 assumptions to test. Download the kit →
Thinking about building Benthicore or something close to it? The make-or-break question is whether enough blocks get awarded to keep a survey team busy, and I can help you test that before you hire anyone. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.