Seaboard Marine sailing schedules
Over the last 90 days, Seaboard Marine departed on schedule about 100% of the time across 817 observed sailings, with roughly 0% of departures behind schedule and 90th-percentile schedule drift of about 168 hours (7 days). For your exact route, compare Seaboard Marine against every other line on the lane by transit time and observed arrival reliability before you book.
SMLU · schedule data as of Jul 28, 2026.
What you get for Seaboard Marine
- Forward sailings: vessel, voyage, service loop, departure and arrival dates, and cut-offs where Seaboard Marine publishes them.
- Coverage: US, Caribbean, and Latin America trades.
- Reliability: once a lane has enough tracked port calls, we score Seaboard Marine on actual-vs-scheduled arrival, not on the schedule it published. Thin lanes are shown as low-sample, never guessed.
- Same shape as every line: Seaboard Marine reads the same as MSC, Maersk, or any other carrier, so you can rank them side by side.
How Seaboard Marine reliability is scored
We don't take a carrier's word for its transit time. When SchedulesMCP has enough tracked arrivals on a Seaboard Marine lane, it compares each actual arrival against what was scheduled and reports the observed on-time rate and the median and p90 transit. Lanes without enough observations are labelled low-sample rather than given a made-up score, so a number, when you see one, is real.
Compare Seaboard Marine against the alliance
Seaboard Marine rarely runs a lane alone. Put your origin and destination into the live tool to rank Seaboard Marine against every other line on that exact pair by transit time and observed reliability before you book.
Schedule footprint
What we currently track for Seaboard Marine across the forward schedule window: the sailings, the distinct port-pairs, and the named service loops behind them.
Top lanes Seaboard Marine sails
The busiest port-pairs on Seaboard Marine's network by tracked sailings. Open a lane for the full carrier line-up and upcoming departures.
| Lane | Sailings | Median transit |
|---|---|---|
| Puerto Cortés → Puerto Santo Tomás de Castilla | 13 | 1 days |
| Miami → San Salvador | 12 | 4 days |
| Miami → Puerto Cortés | 12 | 3 days |
| Miami → Puerto Santo Tomás de Castilla | 12 | 4 days |
| Puerto Santo Tomás de Castilla → Puerto Cortés | 12 | 1 days |
| Miami → Rio Haina | 10 | 3 days |
| Puerto Cortés → Miami | 8 | 4 days |
| Puerto Cortés → San Salvador | 8 | 2 days |
| Rio Haina → Miami | 8 | 2 days |
| Kingston → George Town | 6 | 2 days |
Schedule reliability
How much Seaboard Marine's published departures moved over the last 90 days, measured from the revisions to their own ETDs, not from a survey. Higher drift means the board shifts more often after it's posted.
Seaboard Marine schedules & reliability: FAQ
How reliable is Seaboard Marine?
Over the last 90 days, Seaboard Marine departed on schedule about 100% of the time across 817 observed sailings, with roughly 0% of departures behind schedule and 90th-percentile schedule drift of about 168 hours (7 days).
How reliable is Seaboard Marine on my lane?
Seaboard Marine's on-time reliability varies by lane, so SchedulesMCP scores it per route from actual versus scheduled arrivals rather than quoting one figure. Enter your origin and destination in the Compare tool to see Seaboard Marine's observed on-time percentage and transit time on that exact lane; lanes with too few tracked arrivals are marked early-data instead of guessed.
How do I compare Seaboard Marine against other carriers?
Open the Compare tool, enter an origin and destination, and Seaboard Marine is ranked side by side with every other carrier on that lane by observed on-time reliability, transit time, next departure and sailing frequency, so you can see before you book whether Seaboard Marine or a rival is the better call.
Where do Seaboard Marine sailing schedules come from?
Seaboard Marine sailings come from Seaboard Marine's published schedule API, normalised into the same schedule shape as every other line.
What trades does Seaboard Marine cover?
Seaboard Marine (SMLU) covers US, Caribbean, and Latin America trades. SchedulesMCP normalises those forward sailings into the same shape as every other line so they rank directly against each other.