NOAA S-57 chart cell
Keku Strait - Northern Part; Frederick Sound, Security Bay, Skanax Bay
US4AK5MK
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 5,282
- S-57 layers
- 45
- Published
- May 28, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.00000° N
- South
- 56.70000° N
- West
- 134.40000° W
- East
- 133.80000° W
- Center
- 56.85000° N, 134.10000° W
- Bounds area
- 355 sq nm
- Feature density
- 14.8862 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 117.4
- Smallest layer
- 1
- Largest layer
- 1,365
- Area sq km
- 1,217
- Features per sq km
- 4.34011
- DEPCNT Depth contour 1,365
- DEPARE Depth area 1,175
- SBDARE Seabed area 820
- UWTROC Underwater rock 487
- LNDARE Land area 390
- COALNE Coastline 330
- WEDKLP 246
- OBSTRN Obstruction 95
- RIVERS River 64
- LNDELV 50
- LNDRGN Land region 29
- SLCONS Shoreline construction 28
- SEAARE Sea area 26
- M_QUAL Data quality 24
- PILPNT 18
- DAYMAR 14
- LIGHTS Light 14
- BCNLAT Lateral beacon 13
- SOUNDG Sounding 13
- MORFAC 12
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/US4AK5MK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5MK/1.0/US4AK5MK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5MK/1.0/US4AK5MK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5MK/1.0/US4AK5MK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5MK/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | May 28, 2024 | metadata.json |