NOAA S-57 chart cell
Hecate Strait, including Behm and Portland Canals
US3AK4RM
- Usage band
- Coastal · code 3
- Current edition
- 11.1
- Features
- 2,891
- S-57 layers
- 38
- Published
- Mar 13, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 56.09652° N
- South
- 54.43789° N
- West
- 131.35079° W
- East
- 130.26630° W
- Center
- 55.26721° N, 130.80854° W
- Bounds area
- 3,694 sq nm
- Feature density
- 0.7826 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 76.1
- Smallest layer
- 1
- Largest layer
- 568
- Area sq km
- 12,671
- Features per sq km
- 0.22816
- UWTROC Underwater rock 568
- DEPCNT Depth contour 393
- DEPARE Depth area 346
- LNDARE Land area 339
- COALNE Coastline 327
- SLOGRD 324
- RIVERS River 188
- SBDARE Seabed area 137
- SEAARE Sea area 63
- LNDRGN Land region 51
- OBSTRN Obstruction 30
- SLOTOP 16
- FSHZNE 15
- M_QUAL Data quality 14
- SOUNDG Sounding 13
- C_ASSO 8
- BCNSPP Special purpose beacon 7
- LIGHTS Light 7
- DAYMAR 6
- LNDELV 6
Nearby Chart Cells
Coastal usage band
Current Edition Files
The NOAA ZIP archive is the upstream source for this chart cell; the other files are Open Ships generated derivatives for web and GIS use.
- Original NOAA ZIP archive https://www.charts.noaa.gov/ENCs/US3AK4RM.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/coastal/US3AK4RM/11.1/US3AK4RM.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/coastal/US3AK4RM/11.1/US3AK4RM.001
- GeoJSON https://charts.openships.ai/noaa/s57/coastal/US3AK4RM/11.1/US3AK4RM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/coastal/US3AK4RM/11.1/US3AK4RM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/coastal/US3AK4RM/11.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 11.1 | Mar 13, 2026 | metadata.json |