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 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’.


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
10/14Thu02:11 AM48L cm
10/14Thu09:03 AM376H cm
10/14Thu02:42 PM175L cm
10/14Thu08:43 PM404H cm
10/15Fri03:30 AM43L cm
10/15Fri10:12 AM406H cm
10/15Fri04:02 PM137L cm
10/15Fri10:02 PM419H cm
10/16Sat04:32 AM27L cm
10/16Sat11:03 AM439H cm
10/16Sat04:59 PM90L cm
10/16Sat11:02 PM441H cm
10/17Sun05:20 AM14L cm
10/17Sun11:44 AM468H cm
10/17Sun05:45 PM46L cm
10/17Sun11:51 PM460H cm
10/18Mon05:59 AM9L cm
10/18Mon12:19 PM490H cm
10/18Mon06:24 PM10L cm
10/19Tue12:33 AM471H cm
10/19Tue06:34 AM12L cm
10/19Tue12:50 PM505H cm
10/19Tue07:00 PM-16L cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
10/15 Fri 06:00PM0.83315.21
10/15 Fri 09:00PM1.42305.43
10/16 Sat 12:00AM1.53308.47
10/16 Sat 03:00AM1.59260.32
10/16 Sat 06:00AM1.61243.13
10/16 Sat 09:00AM1.79240.95
10/16 Sat 12:00PM1.63240.04
10/16 Sat 03:00PM1.53265.23
10/16 Sat 06:00PM1.22250.55
10/16 Sat 09:00PM0.76237.23
10/17 Sun 12:00AM1.65189.88
10/17 Sun 03:00AM1.42164.84
10/17 Sun 06:00AM1.3339.73
10/17 Sun 09:00AM0.84121.68
10/17 Sun 12:00PM1.18216.02
10/17 Sun 03:00PM1.02230.64
10/17 Sun 06:00PM0.84232.58
10/17 Sun 09:00PM1.03108.33
10/18 Mon 12:00AM0.77338.68
10/18 Mon 03:00AM2.04290.46
10/18 Mon 06:00AM1.94282.07
10/18 Mon 09:00AM2.96277.21
10/18 Mon 12:00PM4.02269.92
10/18 Mon 03:00PM4.16281.89
10/18 Mon 06:00PM4.15289.7
10/18 Mon 09:00PM5.29294.79
10/19 Tue 12:00AM5.02285.38
10/19 Tue 03:00AM4.46279.88
10/19 Tue 06:00AM4.4273.16
10/19 Tue 09:00AM3.8272.08
10/19 Tue 12:00PM3.02267.56
10/19 Tue 03:00PM2.62242.88
* : UTC Timezone, Speed in meters per sec, and True Direction