Monday 5 June 2023 · below the Index · spike
Iranian attack on merchant vessel in Strait of Hormuz
On June 5, 2023, U.S. and UK naval forces responded to a merchant ship being harassed by Iranian attack vessels in the Strait of Hormuz. The incident highlighted ongoing geopolitical tensions in the region affecting maritime commerce.
Peak 57.2 on Monday 5 June 2023. The shaded band is the incident window.
Where the attention came from
Media-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 49% of all days since 2020, and the highest since Thursday 25 May 2023.
How far it spread
Stayed in one vessel type — 1 of 6 vessel-type groups drew clearly more readers than usual.
Bulk carriers rose on just one day of the window, staying flat either side — readership of a vessel-type article can jump for a day on one popular link or an unrelated story about the same vessel type.
Bulk carriers is a small readership base — normally about 455 readers a day, so a few hundred extra makes a large multiple.
Readers here means readers of the Wikipedia article on each vessel type — the same source as the Research signal, not news coverage — so an incident can dominate the news without moving this panel. 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 71% of coverage shipping was the thing acted upon rather than the actor.
How the coverage sounded
Coverage ran 79% negative overall.
Each article is scored on a five-step scale from strongly negative to strongly positive; the bar is the share of coverage at each step.
Sample of the headlines
- Iran Harasses Merchant Ship in Strait of Hormuzgcaptain.com · 2023-06-05
- DVIDS - News - U.S., UK Navies Respond to Merchant Vessel Distress Call in Strait of Hormuzdvidshub.net · 2023-06-05
- U.S., UK Navies Respond to Merchant Vessel Distress Call in Strait of Hormuzseapowermagazine.org · 2023-06-05
- Iranian Boats 'Harass' Merchant Ship In The Strait Ofmarinelink.com · 2023-06-05
- US and UK sailors help merchant ship 'harassed' by Iranian attack vesselsmsn.com · 2023-06-05
- US, UK navies respond to merchant ship distress call following harassment by Iranian vesselsbairdmaritime.com · 2023-06-05
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
- Registered in a single underlying series only — one vessel-type article, news term or social query — and never moved the Index itself.
- The coverage panels count only articles matched to this incident specifically.
Maritime Attention Index, incident: Iranian attack on merchant vessel in Strait of Hormuz, peak 57.2 on 5 June 2023. maritimeattentionindex.com/incidents/2023-iranian-attack-on-merchant-vessel-in-strait-of-hormuz/