
Technical Data
Conditions
Overview
Tomakomai is a city and port in Iburi Subprefecture, Hokkaido, Japan. It is the largest city in the Iburi Subprefecture, and the fourth largest city in Hokkaido. As of 31 July 2023, it had an estimated population of 167,372, with 83,836 households, and a population density of 298 persons per km2. The total area is 561.57 km2 (216.82 sq mi).
Location
42.6333°N, 141.6333°E
View on Google Maps →Vessels underway broadcasting a destination that resolves to this port, closest first. Distance is the real sea route (around land and through canals). Off port is steaming time at the vessel’s passage speed; alongside adds the wait this port has actually kept comparable ships for. Berth waits vary far more than they average, so read the queue as typical, not promised. The crew’s own reported ETA is shown alongside for comparison.
| Vessel | Type | Distance | Speed | Off port | Alongside | Crew ETA |
|---|---|---|---|---|---|---|
| YUTOKU MARU | General Cargo | 675 nm | 12.7 kn | 29 Aug | 31 Aug+39h | 30 Aug |
| MANYO MARU NO.28 | General Cargo | 675 nm | 11.4 kn | 30 Aug | 31 Aug+32h | 30 Aug |
Network
How central Tomakomai sits in the sea-route network we cover — a connectivity score across navigable distances. A higher score means the port is navigationally close to many other well-connected ports, the maritime signature of a hub.
Directly routable to 349 other covered ports.
Method. A connectivity score across our own route network: a port reads higher when it is navigationally close to many other well-connected ports. The score is rescaled 0–100 within the snapshot, so the single most-connected port reads 100. Distances are Suez / Panama / Malacca-aware navigable sea miles.
Coverage. The route network spans the 350 largest commercial ports, so this ranks hubs within that covered network, not against every port on earth. The number is deterministic — no confidence grade is invented. Computed Aug 27, 2026.
Conditions