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’. 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
08/12Fri01:09 AM551.057H cm
08/12Fri07:41 AM-118.899L cm
08/12Fri02:07 PM485.08H cm
08/12Fri07:49 PM16.297L cm
08/13Sat01:58 AM553.439H cm
08/13Sat08:23 AM-116.179L cm
08/13Sat02:48 PM499.334H cm
08/13Sat08:36 PM-1.711L cm
08/14Sun02:44 AM538.331H cm
08/14Sun09:03 AM-95.397L cm
08/14Sun03:27 PM502.356H cm
08/14Sun09:22 PM-6.427L cm
08/15Mon03:29 AM507.178H cm
08/15Mon09:42 AM-58.59L cm
08/15Mon04:06 PM494.126H cm
08/15Mon10:08 PM1.717L cm
08/16Tue04:14 AM464.012H cm
08/16Tue10:21 AM-9.767L cm
08/16Tue04:44 PM475.952H cm
08/16Tue10:57 PM20.226L cm
08/17Wed05:02 AM414.56H cm
08/17Wed11:00 AM45.708L cm
08/17Wed05:25 PM450.496H cm
08/17Wed11:49 PM44.741L cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
08/13 Sat 06:00PM3.58311.93
08/13 Sat 09:00PM3.29310.22
08/14 Sun 12:00AM2.85297.64
08/14 Sun 03:00AM3.12319.85
08/14 Sun 06:00AM2.2313.94
08/14 Sun 09:00AM2.7290.49
08/14 Sun 12:00PM1.95295.04
08/14 Sun 03:00PM1.96285.16
08/14 Sun 06:00PM2.09313.96
08/14 Sun 09:00PM2.34295.87
08/15 Mon 12:00AM2.66293.41
08/15 Mon 03:00AM3.29309.89
08/15 Mon 06:00AM2.19303.86
08/15 Mon 09:00AM1.78291.06
08/15 Mon 12:00PM1.53303.74
08/15 Mon 03:00PM1.5330.88
08/15 Mon 06:00PM0.49307.39
08/15 Mon 09:00PM2.26264.32
08/16 Tue 12:00AM1.57309.67
08/16 Tue 03:00AM1.06308.19
08/16 Tue 06:00AM1313.76
08/16 Tue 09:00AM1.35284.31
08/16 Tue 12:00PM1.78305.03
08/16 Tue 03:00PM2.04304.59
08/16 Tue 06:00PM3.19324.75
08/16 Tue 09:00PM3.93354.8
08/17 Wed 12:00AM4.27342.98
08/17 Wed 03:00AM3.83326.14
08/17 Wed 06:00AM2.65295.92
08/17 Wed 09:00AM2.09307.27
08/17 Wed 12:00PM2.32310.52
08/17 Wed 03:00PM3.63345.53
* : UTC Timezone, Speed in meters per sec, and True Direction