Bosporus Strait live traffic

Black Sea ↔ Sea of Marmara

AIS live AIS updated 0 sec ago
Official transit statistics IMF PortWatch

Traffic below normal

62 transits on 25 October · 7-day average 53.7 per day

58% of normal · 2025 average 92.4 per day
↑ 15%7 days vs previous 7
↓ 47%30-day average vs normal
100.1per day, same week last year
62Transits · 25 Octlatest published day
53.77-day averagetransits per day
49.230-day average1476 transits in 30 days
92.4Normal · 2025average transits per day

IMF PortWatch counts ships that complete a transit, from satellite AIS. Latest published day: 25 October 2026 (3 days behind today); the series is updated weekly. Next release expected around 3 November. Methodology

Daily transits since 2019 · IMF PortWatch

Bars: transits per UTC day. Line: 7-day average. Numbered markers: events from the timeline below.

Vessel types last 30 days · IMF PortWatch

  • Tankers 421 29%
  • Container ships 170 12%
  • Dry bulk 257 17%
  • General cargo 618 42%
  • Ro-ro 10 1%

On 25 Oct: Tankers 16 · Container ships 5 · Dry bulk 9 · General cargo 31 · Ro-ro 1

Timeline what moved the numbers

  1. 2
    17 Jul 2023
    Russia withdraws from the Black Sea Grain Initiative
  2. 1
    22 Jul 2022
    Black Sea Grain Initiative signed in Istanbul

Latest news via Google News

Collected automatically from news media by keyword filters and not verified by StraitTraffic. Dated events that explain the numbers are in the timeline.

Live layer terrestrial AIS

Vessels right now and our own transit count

Positions received in the last 30 minutes from shore-based AIS receivers, and transits counted by StraitTraffic from those signals. Independent of the official statistics above.

AIS live AIS updated 0 sec ago
Partial AIS coverage.

Shore receivers reach only part of this area, so the map shows only some of the vessels and StraitTraffic does not count transits here. Use the official statistics above for traffic levels.

How coverage works
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Background

About Bosporus Strait traffic

The Bosporus runs through Istanbul and is the only sea link between the Black Sea and the Mediterranean. Grain, oil and container traffic from Ukraine, Russia, Romania and Bulgaria all pass through this narrow, winding channel.

How transits are counted

Official daily totals come from IMF PortWatch. The live map shows vessels in range of shore receivers; StraitTraffic adds its own transit count only when they cover both ends of the strait, and local ferries and harbour traffic that stay inside the strait are never counted.

3 passages in the last 24 hours could not be confirmed and are excluded from the counts.