NOAA S-57 chart cell
Montague Island
US4AK4QN
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 1,918
- S-57 layers
- 36
- Published
- Sep 17, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 148.20000° W
- East
- 147.60000° W
- Center
- 59.85000° N, 147.90000° W
- Bounds area
- 326 sq nm
- Feature density
- 5.8851 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 53.3
- Smallest layer
- 1
- Largest layer
- 549
- Area sq km
- 1,118
- Features per sq km
- 1.71582
- UWTROC Underwater rock 549
- SBDARE Seabed area 274
- DEPCNT Depth contour 225
- LNDARE Land area 192
- DEPARE Depth area 188
- COALNE Coastline 145
- RIVERS River 124
- WEDKLP 56
- OBSTRN Obstruction 32
- M_QUAL Data quality 22
- SOUNDG Sounding 21
- SEAARE Sea area 14
- SLOTOP 12
- LNDELV 10
- LNDRGN Land region 10
- PILPNT 9
- CBLSUB 4
- MAGVAR Magnetic variation 4
- WATTUR 3
- WRECKS Wreck 3
Nearby Chart Cells
Approach 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/US4AK4QN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4QN/2.0/US4AK4QN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4QN/2.0/US4AK4QN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4QN/2.0/US4AK4QN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4QN/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Sep 17, 2024 | metadata.json |