Terminal Volatility Index · Terminal detail

T18 SSA Marine

Seattle
USSEA
Q1 2026 cohort
22
Production rank
Stable
Stability tier
77
Voyages observed
15
Carriers calling

T18 SSA Marine (Seattle) is a Stable-stability terminal at production rank 22 for the Q1 2026 cohort.

Terminal stability

Stable stability -- production rank 22 for the Q1 2026 cohort. 15 carriers, 2 services, 77 voyages observed in the cohort window. Terminal cadence: Batch.

Rank should be read as a band rather than a precise placement.

What the data shows

Cohort window: November 1, 2025 through April 1, 2026 (5-month inaugural baseline).

Metric Value
Events per schedule 0.2
Planning-horizon-correct rate 66.7%
Late-stage rate 0.0%
Median schedule shift magnitude 24 hours (1.0 days)
Voyages observed 77
Voyages classified 42

Dominant carriers (top 3)

CMA CGM (CMDU), SMC, OOCL (OOLU)

Six-flag disclosure

Disclosure Value
Sample sufficiency sufficient
Rank uncertain Yes
Rank stability 55.0%
Label stability 65.6%
Event concentration flag Yes
Zero-event voyages share 85.7%
Display rank treatment treat-as-band
Snapshot coverage gap Yes

The six-flag structure is the published per-terminal uncertainty disclosure. Together they answer: is the sample large enough to rank, is the rank stable across bootstrap iterations, does the tier label hold under resampling, are the events concentrated in too few voyages, and is the snapshot coverage adequate for the cohort window.

Methodology

This terminal's metrics derive from the Q1 2026 inaugural cohort.

For the full methodology, terminal rankings, and per-tier interpretation, see Terminal Volatility Index, Q1 2026.

Related publications

See this terminal's ERD and CY Cutoff changes every morning

One email before your first dispatch: old date, new date, and when it changed. Free 30-day trial, no card.

Track My Terminals

Measured over the Q1 2026 cohort window, November 2025 to April 2026. Full rankings and methodology in the Terminal Volatility Index, Q1 2026.