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
01/22Sat03:25 AM455.332H cm
01/22Sat09:12 AM103.18L cm
01/22Sat03:14 PM450.573H cm
01/22Sat09:33 PM9.604L cm
01/23Sun04:01 AM456.849H cm
01/23Sun09:59 AM100.927L cm
01/23Sun04:00 PM418.51H cm
01/23Sun10:12 PM44.167L cm
01/24Mon04:41 AM457.257H cm
01/24Mon10:55 AM98.715L cm
01/24Mon04:57 PM383.304H cm
01/24Mon10:58 PM84.589L cm
01/25Tue05:29 AM457.048H cm
01/25Tue12:02 PM92.53L cm
01/25Tue06:10 PM353.356H cm
01/25Tue11:54 PM125.289L cm
01/26Wed06:26 AM458.465H cm
01/26Wed01:19 PM75.836L cm
01/26Wed07:40 PM342.095H cm
01/27Thu01:06 AM156.768L cm
01/27Thu07:34 AM466.123H cm
01/27Thu02:38 PM44.454L cm
01/27Thu09:09 PM357.171H cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
01/23 Sun 06:00PM2.81284.94
01/23 Sun 09:00PM1.96278.27
01/24 Mon 12:00AM1.64274.13
01/24 Mon 03:00AM1.55273.74
01/24 Mon 06:00AM0.98245.74
01/24 Mon 09:00AM1.69234.77
01/24 Mon 12:00PM1.17223.76
01/24 Mon 03:00PM0.6212.51
01/24 Mon 06:00PM0.73235.35
01/24 Mon 09:00PM0.63301.45
01/25 Tue 12:00AM0.93311.91
01/25 Tue 03:00AM1.66302.88
01/25 Tue 06:00AM1.86312.82
01/25 Tue 09:00AM2.85307.35
01/25 Tue 12:00PM2.65309.19
01/25 Tue 03:00PM2.36280.91
01/25 Tue 06:00PM2.01287.83
01/25 Tue 09:00PM1.6284.42
01/26 Wed 12:00AM1.94283.46
01/26 Wed 03:00AM0.97215.84
01/26 Wed 06:00AM1.98220.24
01/26 Wed 09:00AM1.43202.86
01/26 Wed 12:00PM1.03233.91
01/26 Wed 03:00PM1.19202.25
01/26 Wed 06:00PM1.74181.12
01/26 Wed 09:00PM1.59169.25
01/27 Thu 12:00AM0.91297.46
01/27 Thu 03:00AM1.9302.6
01/27 Thu 06:00AM2.57310.49
01/27 Thu 09:00AM2.65292.98
01/27 Thu 12:00PM2.42293.09
01/27 Thu 03:00PM2.6297.73
* : UTC Timezone, Speed in meters per sec, and True Direction