TONGASS NARROWS (Marine Chart : US17430_P2574)

TONGASS NARROWS marine chart is available as part of iBoating : USA Marine & Fishing App(now supported on multiple platforms including Android, iPhone/iPad, MacBook, and Windows(tablet and phone)/PC based chartplotter.).  

 When you purchase our Nautical Charts App,  you get all the great marine chart app features like fishing spots, along with TONGASS NARROWS marine chart. The Marine Navigation App provides advanced features of a Marine Chartplotter including adjusting water level offset and custom depth shading. Fishing spots, Relief Shading and depth contours layers are available in most Lake maps. Nautical navigation features include advanced instrumentation to gather wind speed direction, water temperature, water depth, and accurate GPS with AIS receivers(using NMEA over TCP/UDP). Autopilot support can be enabled during ‘Goto WayPoint’ and ‘Route Assistance’. Now Automatic Slip to Slip Boat routing based Boat's Draft (draught) is available for water mapped by this chart.


Have more questions about the Nautical Chart App? Ask us.



Min Longitude-131.72
Min Latitude55.28
Max Longitude-131.55
Max Latitude55.37
Edition Label 112
Edition Label 21
Edition Label 325
* some Stats may include nearby/connecting waterbodies
Nearby Tide Station Ketchikan
Distance from center: 1 km
Weekly High / Low Tide Table
05/29Wed05:09 AM429.82H cm
05/29Wed11:54 AM-2.042L cm
05/29Wed06:39 PM388.778H cm
05/30Thu12:21 AM141.224L cm
05/30Thu06:17 AM401.196H cm
05/30Thu12:54 PM18.248L cm
05/30Thu07:40 PM403.276H cm
05/31Fri01:40 AM119.253L cm
05/31Fri07:35 AM381.16H cm
05/31Fri01:57 PM36.307L cm
05/31Fri08:39 PM427.996H cm
06/01Sat02:55 AM79.336L cm
06/01Sat08:54 AM376.644H cm
06/01Sat02:59 PM50.941L cm
06/01Sat09:33 PM458.194H cm
06/02Sun04:00 AM29.431L cm
06/02Sun10:07 AM386.362H cm
06/02Sun03:57 PM62.326L cm
06/02Sun10:23 PM488.105H cm
06/03Mon04:56 AM-20.102L cm
06/03Mon11:11 AM403.512H cm
06/03Mon04:52 PM71.291L cm
06/03Mon11:10 PM512.814H cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
05/30 Thu 12:00PM2.09273.16
05/30 Thu 03:00PM2.51287.53
05/30 Thu 06:00PM2.9286.76
05/30 Thu 09:00PM4.23320.97
05/31 Fri 12:00AM2.97289.42
05/31 Fri 03:00AM2.69291.46
05/31 Fri 06:00AM2.59269.54
05/31 Fri 09:00AM2.92272.01
05/31 Fri 12:00PM3.04274.49
05/31 Fri 03:00PM2.82277.53
05/31 Fri 06:00PM2.95281.9
05/31 Fri 09:00PM2.62288.83
06/01 Sat 12:00AM3.59279.93
06/01 Sat 03:00AM7.74298.31
06/01 Sat 06:00AM4.89293.72
06/01 Sat 09:00AM3.66309.26
06/01 Sat 12:00PM1.47287.53
06/01 Sat 03:00PM2.86358.75
06/01 Sat 06:00PM4337.23
06/01 Sat 09:00PM4.59348.62
06/02 Sun 12:00AM4.51328.6
06/02 Sun 03:00AM3.47307.83
06/02 Sun 06:00AM2.91286.43
06/02 Sun 09:00AM5.37329.08
06/02 Sun 12:00PM4.27317.72
06/02 Sun 03:00PM5.75310.65
06/02 Sun 06:00PM3.08284.82
06/02 Sun 09:00PM3.45296.87
06/03 Mon 12:00AM6.11310.15
06/03 Mon 03:00AM2.27288.52
06/03 Mon 06:00AM1.35254.23
06/03 Mon 09:00AM1.84182.57
* : UTC Timezone, Speed in meters per sec, and True Direction