REFINING THE SEARCH

 

GROK:


Actionable Plan: Deploy AUV Magnetometer Swarm for MH370 Search
Target Zone (highest-probability remaining real estate post-Ocean Infinity 2025–2026 campaign)
  • ~15,000 km² elongated rectangle/polygons aligned NE–SW along the 7th Inmarsat arc, 33°S–36°S latitude.
  • Centred on IG Hotspot / UGIB 2020 LEP (≈34.23°S, 93.78°E), extending 0–45 NM (0–83 km) either side of the arc (weighted outward SE for possible 70 NM glide).
  • Priority sub-blocks: (1) core LEP + steep-slope zone south of it; (2) drift-consensus box ≈35.4–35.9°S, 92.7–93.3°E; (3) gap-fill in prior low-quality sonar strips.
  • Depths 3,000–6,000 m. This is essentially the same block Ocean Infinity proposed in 2024 and partially scanned (only ~7,571 km² actually covered) before departing the area on 23 January 2026 with no findings.
Technology & Execution
  • Swarm of 6 deep-rated AUVs (e.g., Kongsberg HUGIN 6000-class, Teledyne REMUS 6000, or Argeo SeaRaptor equivalents, 6,000 m rated).
  • Primary payload: towed Overhauser magnetometer (Marine Magnetics Explorer or equivalent, 0.001 nT resolution) or 3-axis gradiometer array. Minimal secondary sensors (INS/DVL, USBL, altimeter, CTD) — no side-scan sonar to maximise speed and cut costs.
  • Pattern: lawnmower tracks parallel to bathymetry contours, 200–400 m line spacing (coarse first pass), 30–50 m altitude, 3–4 knots.
  • Coverage: 240–480 km² per day (swarm total). Full 15,000 km²: 35–65 operational days at sea (incl. 20–30% overlap, infill, weather downtime).
  • Phased rollout: start with 5,000–8,000 km² core sub-block (LEP + gaps) for quick results; expand only if anomalies appear.
  • Follow-up: ROV on any >200 × 200 m magnetic contacts. Onshore AI anomaly detection.
  • Mothership: single 50–80 m mid-size survey/OSV vessel with LARS, based out of Fremantle/Perth (≈1,200–1,500 nm transit).
Potential Operators (all commercially proven for 6,000 m AUV + magnetometer wreck searches)
  1. Ocean Infinity (strongest candidate) — already mapped the exact zone, operates large HUGIN-style AUV swarms, has “no-find, no-fee” experience with Malaysia, and has publicly stated commitment to return “when circumstances allow”.
  2. Deep Ocean Search (DOS) + Deep Sea Vision partnership — operates HUGIN 6000 swarms (up to 8 vehicles) explicitly equipped with magnetometers, 0–6,000 m (extendable to 11,000 m), proven on aircraft/wreck searches and debris recovery.
  3. Oceaneering or Argeo — established AUV survey contractors with magnetometer integration; can supply/lease vehicles for a single-vessel campaign.
    Approach Malaysian government/Ministry of Transport for partnership; they have used performance-based contracts before.
Timing (as of March 2026)
  • Planning / contracting / data refinement / mobilisation: next 3–6 months (Q2–Q3 2026).
  • At-sea execution: next optimal weather window — Southern Hemisphere summer, November/December 2026 – March 2027 (avoids recent winter weather that halted Ocean Infinity).
  • Total campaign duration: 2.5–3.5 months (incl. transit and contingency).
Costing (mag-only swarm economics)
Magnetometer-only configuration allows 200–400 m line spacing (vs 50–150 m for high-res sonar), lighter payloads, lower power, and simpler processing → 40–60% lower daily burn rate than Ocean Infinity’s full multi-sensor suite.
  • Estimated full 15,000 km² campaign: US$10–25 million (mid-size vessel + 6 leased AUVs + crew + processing).
  • Breakdown drivers: vessel ops ≈US$30–60k/day; AUV daily rates + logistics ≈US$15–25k total swarm; mobilisation/transit extra.
  • Best structure: “no-find, no-fee” with success payment US$40–70 million (mirrors Ocean Infinity’s recent MH370 deal).
  • Further savings: leased (not owned) AUVs, AI onshore analysis, staggered launches for near-continuous coverage.
  • Phase 1 (5–8k km²) could be executed for US$5–12 million. These figures are realistic for commercial deep-ocean AUV surveys; actual quotes from DOS/Ocean Infinity would refine them.
Likelihood of Finding the Debris
This remains the single highest-probability unsearched or partially-searched zone on the planet:
all Inmarsat, performance, drift, and debris evidence still converges here.
Ocean Infinity’s 2025–2026 partial coverage has eliminated some real estate and brought clarity, but significant data gaps, low-quality sonar strips, and steep-slope pockets remain inside the original 15,000 km² block.
  • Probability the wreckage lies inside the full proposed block: ~25–40% (expert consensus post-2026; reduced from pre-search estimates but still far higher than any alternative location).
  • Magnetometer detection probability: very high for a 777 (two massive GE90 engines + steel structure produce strong, detectable anomalies tens to hundreds of nT even if partially buried or in sediment).
    If the core 5–8k km² sub-block returns negative, probability drops sharply and modest northward/southward extensions or BFO re-analysis would be next.

Immediate Next Steps
  1. Contact Ocean Infinity and Deep Ocean Search for preliminary quotes and availability.
  2. Engage independent experts (Victor Iannello / UGIB team) to finalise the exact polygons using latest gap analysis.
  3. Approach Malaysian authorities to secure a no-find-no-fee framework before the next summer window.

This plan is compact, data-driven, and deliberately cheaper/faster than traditional full-sonar campaigns while maximising the chance of locating the ferromagnetic wreckage of MH370. It directly builds on everything learned from the 2025–2026 effort and represents the clearest remaining path forward.

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