The publication ladder for vessel schedule decision timing.
Three publications. One progression. Detection, diagnosis, measurement. Built for U.S. exporters and drayage providers planning against schedules that move inside the planning horizon.
Three layers, one operator decision.
Each publication answers a different question. Read in order, they form a system.
DTB Weekly
What moved this week?
Every vessel that departed in the past seven days. Per-port tables with original-vs-actual ERD and CY Cut shifts, late-stage flags, stability classification.
Read latest ->DTB Monthly
Where does the pattern live?
The Loaded Box edition. Structural diagnosis of the month - which terminals carried the mechanism, what the operator does about it, how the response differs by tier.
Read latest ->VSSI Monthly
How did each port hold up?
Vessel Schedule Stability Index. Port-level stability scores month over month, with timestamped snapshots retained for dispute defense.
Read latest ->Latest from The Loaded Box
Each card opens the most recent edition.
DTB Weekly
Week of April 11, 2026
Every vessel that departed in the past seven days. Per-port tables with original-vs-actual ERD and CY Cut shifts, late-stage flags, and stability classification.
Read latest ->
DIAGNOSIS LAYER · MONTHLYDTB Monthly
March 2026
The Loaded Box edition. Structural diagnosis of what the month's volatility revealed. Where the mechanism operated, which terminals carried the pattern, what the operator does about it.
Read latest ->
MEASUREMENT LAYER · MONTHLYVSSI Monthly
March 2026
Vessel Schedule Stability Index. Port-level stability scores month over month. The measurement underneath the diagnosis - how each gateway moved, where the volatility concentrated.
Read latest ->
How the ladder works in practice
Weekly signals detect motion. DTB Weekly lists every vessel that departed in the past seven days. Which ports crossed the late-stage threshold. Which carriers concentrated their movement. Where the next week's escalation risk likely sits. Observational, not editorial.
Monthly diagnosis resolves structure. When weekly signals stack three weeks in a row at the same port, the question becomes: is this terminal-level instability, or rotation-level? DTB Monthly aggregates and answers. The right operator response is different for each.
VSSI measures the layer underneath. Port-level stability scores, month over month, with timestamped snapshots retained for dispute defense. The measurement that proves the patterns surfaced weekly hold up at the port-aggregate level.
Read together, the three publications are a system. Each closes a gap the prior layer can't.
Each edition delivered when it ships.
Operators only. No marketing series. No upsell sequence. Just the publications in your inbox as they're published.
Frey Commodities
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