Sunday 1 August 2021 · below the Index · spike
Drone attack on tanker in Arabian Sea
A tanker was attacked by drone in the Arabian Sea on July 30, 2021, killing two crew members. Israel and the US blamed Iran for the attack, which escalated Iran-Israel maritime tensions. Iran denied involvement. The incident also coincided with reports of a separate tanker seizure by Iran-backed forces and routine tanker market news.
Peak 76.0 on Tuesday 3 August 2021. The shaded band is the incident window.
Where the attention came from
Social-led, both over the window and on the peak day. Social here is X alone — Bluesky only joins the series from July 2024 — so its level isn't directly comparable with today's series, though its share of this incident is real.
Bar = share of the extra attention over the whole window; the tick marks the share on the peak day alone, where the two differ.
How unusual it was
This was above 76% of all days since 2020, and the highest since Saturday 5 June 2021.
How far it spread
No vessel type moved — 0 of 6 vessel-type groups drew clearly more readers than usual.
Bars start at 1× — normal readership for that vessel type, the weeks before the incident. Grey = no clear lift. "Over time" shows each group's daily readers through the window; "All 12 articles" breaks the six groups back into their members.
How it was framed the frame glossary →
Lead frame: geopolitical pawn. Trade press was 3% of in-scope coverage — the story had left the trade press and gone mainstream. (Historical coverage is scored on headlines only.)
Acting, or acted upon
In 69% of coverage shipping was the thing acted upon rather than the actor; 49% of it was strongly negative in tone.
What the coverage said
- Oil tanker attacked off Oman in Arabian Sea - The Washington Postwashingtonpost.com · 2021-07-30
- G7: Iran behind tanker attack, 'threatens international peace' | Shipping Newsaljazeera.com · 2021-08-06
- Two killed in attack on Zodiac Maritime tanker off Omantradewindsnews.com · 2021-07-30
- Deadly oil tanker attack in Arabian Seamsn.com · 2021-07-30
- Oil tanker linked to Israeli billionaire reportedly attacked in Arabian Seathehill.com · 2021-07-30
- Briton among two killed in attack on tanker in Arabian Seaiwradio.co.uk · 2021-07-30
Gold rule = a national or international outlet, not a trade title.
- social = X only before Bluesky (2024-07-01); not comparable with today's series
- tier C: only a Wikipedia article, GDELT sub-vocabulary term, or social per-term query fired — not yet confirmed as a real maritime incident (Phase C naming/is_maritime_incident does that).
- naming step found more than one plausible cause in the headlines (alternatives: ['Tanker attacked by drone off Oman', 'Tanker seized by Iran-backed forces', 'Routine tanker market and shipping reports']) — attribution.confidence is low; label may be an honest compound
- coverage scored on title only (no excerpt) — measured ~8pp frame precision cost vs title+excerpt (docs/HANDOVER-incidents.md §2.3)
- coverage filtered to articles matching this incident specifically (154/154 kept) — see coverage.filter.terms
Maritime Attention Index, incident: Drone attack on tanker in Arabian Sea, peak 76.0 on 3 August 2021. maritimeattentionindex.com/incidents/2021-drone-attack-on-tanker-in-arabian-sea/