Blank Sailing Log
Record cancelled sailings on your lanes and measure how often your services actually sail as published.
Carriers announce blanks 2–6 weeks out via advisories — logging them on sight gives your bookings a head start the spot market doesn't have.
Sources & references
- Carrier capacity advisories / alliance schedule notices
- Drewry / Sea-Intelligence blank-sailing tracking context
This tracker stores data locally in your browser — nothing is uploaded. It complements (not replaces) carrier track-and-trace: enter milestones from your carrier's notifications to keep one consolidated, private view across all providers.
A blank (void) sailing is a scheduled departure that simply doesn't happen — the carrier removes the week's vessel to manage capacity, around holidays (Golden Week and Chinese New Year blanks are ritual) or whenever demand softens enough to defend rates. For shippers, every blank is a week of capacity deleted: bookings compress onto adjacent sailings, roll risk spikes, and spot rates firm.
About Blank Sailing Log
This log tracks blanks on the services you actually use. The summary's most-blanked service tells you which strings are managed hardest — useful when two carriers' published schedules look identical but one's 'weekly' service sails 44 weeks a year. The impact field converts industry noise into your exposure: blanks that hit booked cargo versus blanks you sailed past. The actionable habit: log the blank when the advisory lands (carriers announce 2–6 weeks out), then immediately review bookings on the adjacent weeks — the +1 week sailing after a blank is the roll-risk sailing, because two weeks of cargo are fighting for one ship. Shippers who move on advisories beat the scramble that follows.
How to use Blank Sailing Log
- 1Fill in the form and add your first record — everything persists locally in your browser.
- 2Watch the summary strip recompute totals and averages as records accumulate.
- 3Sort out stale entries with one-click delete; the data survives page reloads.
- 4Export the CSV any time for reporting or to move the log into a spreadsheet.
Why use Blank Sailing Log?
- ✓Purpose-built fields for this exact workflow — no spreadsheet setup
- ✓Live summary statistics computed from your records
- ✓One-click CSV export for reporting
- ✓Everything stays on your device — nothing is uploaded
Frequently asked questions
Why do carriers blank sailings?+
Capacity discipline: matching ships to demand defends utilisation and rates. Predictable blanks cluster around Chinese holidays (factories close, why sail empty ships?); tactical blanks answer soft demand or repositioning needs. It's rational fleet management that externalises cost onto shippers as compressed capacity — which is why tracking and anticipating them is worth your time.
How do I find out about blank sailings in advance?+
Carrier customer advisories (subscribe on their sites), alliance schedule updates, and your forwarder's notices — typically 2–6 weeks ahead. Analysts publish blank-sailing counts as market indicators too. The log's value is local: industry-wide blanks matter less than 'MY service blanked week 24 and I have three bookings in week 25'.
What should I do when my sailing is blanked?+
Assume the adjacent sailings are now overbooked and act early: reconfirm your booking's status same-day, ask explicitly about roll protection, and consider shifting flexible cargo a week EARLIER (the week before a blank is usually safer than the week after). Customer promises tied to the blanked week need re-basing immediately, not after the roll notice.
Do blank sailings affect contract rates or just spot?+
Both, differently: spot rates firm within days of heavy blanking programs; contract cargo keeps its rate but inherits the space squeeze — contract allocations on blanked weeks get rolled too, just more politely. Heavy blanking on your lane during contract season is also a tell about the capacity the carrier actually intends to run against the commitments it's signing.
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