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Welcome To gCaptain Tools
This tool page contains links to the websites most used by professional mariners. It also contains our AIS ship tracking application and our gCaptain maritime search engine. Enjoy!
GMDSS
- NAVAREA Warnings
- NAVAREA Coverage Map
- Table of International Call Sign Series
- NOAA Navtex page
- Sea Areas
Ship Lookup
- Equasis Ship Information Database
- MMSI Number Look-up
- Coast Station Look-up
- INMARSAT Ship Number Look-up
- Marine Identification Digits by Country
- IMO Number Look-up
- International Telecomunications Union
- FCC Ship License Search
Radio
- Internet Time Tick
- MF & HF NOAA Radio Frequencies
- USCG MF & HF Channel Guide
- VHF Frequencies
- FCC Assigned VHF Channels
Distress
- USCG HF Distress Frequencies And MMSI Numbers
- SARSAT / EPIRB Page
- Global Maritime Search and Rescue Contacts
Misc
- Rules of the Road
- Handbook of Magnetic Compass Adjustment
- IMCA – Introduction to Dynamic Positioning
Publications
General
- American Practical Navigator – Bowditch
- Sight Reduction Tables for Marine Navigation – Pub 229
- Sight Reduction Tables for Air Navigation – Pub 249
- Navigational Star Chart
- Blank Plotting Sheet
- Blank Maneuvering Board
- Maneuvering Board Manual – Pub 217
- Radar Navigation and Maneuvering Board Manual – Pub 1310)
- Navy Publications and Manuals
Navigation
- USCG – Rules Of The Road
- Nautical Charts User Manual
- Online Nautical Almanac
- Notice To Mariners – Pub Updates
Weather
- Mariners Weather Log
- Mariner’s Guide For Hurricane Awareness
- International Tsunami Center
- Marine Observing Handbook 1
- Marine Report User Guide
- A Mariners Guide to Marine Weather Services – Coastal, Offshore, and High Seas
Radio/GMDSS
- Radio Navigational Aids (Pub 117)
- International Code of Signals (Pub 102)
- VHF Channel Chart
- NIST Time Circular
- INMARSAT Maritime Safety Services
- Worldwide Radiofax Broadcast Schedules
Misc
- Handbook of Magnetic Compass Adjustment
- IMCA – Introduction to Dynamic Positioning
- International Medical Guide For Ships
International
GMDSS
- NAVTEX World Schedule
- NAVTEX Worldwide Station Chart
- NAVTEX Manual
- WMO NAVTEX Guide
- Distress Flowcharts (VHF, HF, MF)
Study Guides
Flashing Light
Reference
Going To Cost You
Testing Info
Online Calculators
- Dip of Sea Short of the Horizon
- Local Apparent Sideral Time
- UTC Time Tick
- Mercator Sailing
- Great Circle Sailing
- Conversion for Meters, Feet and Fathoms
- Speed for Measured Mile and Speed, Time, and Distance
- Length of a Degree of Latitude and Longitude
- Geographic Range
- Distance of the Horizon
- Magnetic Delcination
- True Wind Calculator
- Distance Between Ports
- World Port Database
Phenomenon Calculators
- Twilight Calculator
- Rise, Set and Twilight of Sun and Moon
- Time Zone Map
- Night and Day View of the Earth
Electronic Bowditch Tables
- Pub 229
- Altitude Correction for Atmospheric Pressure
- Altitude Factors & Change of Altitude
- Compass Error from Amplitudes Observed on the Celestial Horizon
- Latitude and Longitude Factors
- Meridian Angle and Altitude of a Body on the Prime Vertical Circle
- Compass Error from Amplitudes Observed on the Visible Horizon
- Altitude Correction for Air Temperature
- Table of Offsets
- Meridional Parts
- Traverse Table
Paper Charts
Esoteric
- Distance by Vertical Angle Measured Between Sea Horizon and Top of Object Beyond Sea Horizon
- Distance of an Object by Two Bearings
- Distance by Vertical Angle Measured Between Waterline at Object and Top of Object
- Tsunami Guide
Electronic Navigation
GPS Status and Advisories
DGPS Status and Advisories
GPS Tools
- Geodetic Distance Conversions
- WGS84 Geodetic Calculator
- UTM Map
- Report A Problem
- GPS Satellite Visibility Calculator
- Satellite Tracking Program
- GPS alerts via email
- DGPS Coverage Charts – USA
NOAA Digital Charts
- NOAA Online Chart Viewer
- NOAA Online Chart Viewer – ENCdirect
- Free ENC’s (Electronic Navigational Charts)
- Chart Updates
- Free Raster Digital Charts
- Digital Chart Software
- Bathomectric Charts
- NGA Vector Charts
BA Digital Charts
AIS
Links
Outdated Electronics
Weather Information
Maps
- Atlantic Briefing
- Pacific Briefing
- RadioFax
- Ocean Prediction Center Roundup
- National Hurricane Center
- Pressure Systems USA
- Small Scale Chart USA Wx
- GOES Satellite view East
- GOES Satellite view West
- UNISYS 500mb Chart
- Sea Surface Temps
Tropical
- National Hurricane Center
- US Navy FNMOC Satellite Data Tropical Cyclone Page
- NOGAPS Maps
- Weather Underground – Tropical Wx
- Hurricane Hunter’s Reports
- Storm Visulizations
- Ocean Prediction Center Roundup
- Hurricane Warning (private all-in-one)
- 7-Day NOGAPS Forecast Map (Worldwide)
- US Navy Typhoon Warning Center
Space Weather
- NOAA Space Weather Page
- SEC Space Weather Now
- SEC Space Weather Today
- Current View Of Sun
- SEC Navigation Systems GPS Page
- 3-hour planetary K-index
- Daily Solar and Geophysical Activity Report
Amver/seas VOS
- VOS Homepage
- Did my report go through??
- OceanWeather VOS Map
- VOS & Bouy Map
- Ship Tracking & WX Reports
- Data Plots of your VOS reports
- Map of all VOS ship locations
Misc
- National Bouy Center
- Dopler Radar Images of USA
- NOAA Latest Weather Charts Master Index
- Arora Borealis Status Plot
WX Fax West
Wind/Sea Charts
- 00Z Sea State Analysis 115W-155W
- 12Z Sea State Analysis 115W-135E
- 24HR Wind Wave Forecast VT00Z 115W-155W
- 24HR Wind Wave Forecast VT12Z 115W-155W
- 48HR Sea Surface Chart VT00Z Forecast 115W-135E
- 48HR Sea Surface Chart VT12Z Forecast 115W-135E
- 48HR Wave Period VT00Z Forecast 120W-140E,20-60N
- 48HR Wave Period VT12Z Forecast 120W-140E,20-60N
- 96HR Wind/Wave Forecast 120W-140E,20-60N
- 96HR Wave Period Forecast 120W-140E,20-60N
Surface Charts
- 00Z Surface Chart Analysis 115W-175W (Part 1)
- 00Z Surface Chart Analysis 175W-135E (Part 2)
- 06Z Surface Chart Analysis 115W-175W (Part 1)
- 06Z Surface Chart Analysis 175W-135E (Part 2)
- 12Z Surface Chart Analysis 115W-175W (Part 1)
- 12Z Surface Chart Analysis 175W-135E (Part 2)
- 18Z Surface Chart Analysis 115W-175W (Part 1)
- 18Z Surface Chart Analysis 175W-135E (Part 2)
- 24HR Surface Chart VT12Z Forecast 115W-155W
- 48HR Surface Chart VT00Z Forecast 115W-135E
- 48HR Surface Chart VT12Z Forecast 115W-135E
- 96HR Surface Chart VT00Z Forecast 115W-135E
Upper Air Charts
- 00Z 500MB Analysis 115W-135E
- 12Z 500MB Analysis 115W-135E
- 48HR 500MB Chart VT00Z Forecast 115W-135E
- 48HR 500MB Chart VT12Z Forecast 115W-135E
- 96HR 500MB Chart VT00Z Forecast 115W-135E
Sea Surface Temperatures
WX Fax Gulf Of Mexico
U. S. Surface Charts
- U.S. Surface Chart Analysis at 00Z Continental U.S.
- U.S. Surface Chart Analysis at 06Z Continental U.S.
- U.S. Surface Chart Analysis at 12Z Continental U.S.
- U.S. Surface Chart Analysis at 18Z Continential U.S.
Tropical Surface Charts
- Tropical Surface Chart Analysis at 00Z
- Tropical Surface Chart Analysis at 06Z
- Tropical Surface Chart Analysis at 12Z
- Tropical Surface Chart Analysis at 18Z
High Seas Forecasts
- 04Z High Seas Forecast 0-90W Tropical Belt TEXT DOCUMENT
- 10Z High Seas Forecast 0-90W Tropical Belt TEXT DOCUMENT
- 16Z High Seas Forecast 0-90W Tropical Belt TEXT DOCUMENT
- 22Z High Seas Forecast 0-90W Tropical Belt TEXT DOCUMENT
Text
- High Seas Forecast Pacific
- High Seas Forecast Atlantic
- High Seas Forecast Caribbean & Gulf of Mexico
Links
- nowCOAST NOAA Interactive Weather Mapping
- NOAA Satellite Information Service
- NOAA Weather Radio Streaming Audio
Worldwide WX
- US Navy NOGAPS
- NOGAPS Wave Watch
- GMDSS Weather Reports
- Tropical Cyclone’s Worldwide
- WMO Severe Weather
- Canadian Ice Service
Tides and Currents
- Daily Tide Maps by State
- Daily Tide Predictions
- Current Data
- PORTS Real Time Tide & Current Data – USA
- Sea Level Anomaly Map
Tsunami and Earthquake
- NOAA Warning Center West Coast & Alaska Tsunami Bullitins
- NOAA Warning Center Bullitins
- International Tsunami Information Center
WX Fax East
Wind/Sea Charts
- 12Z Sea State Analysis 10E-95W
- 00Z Sea State Analysis 45W-85W
- 12Z Sea State Analysis 45W-85W
- 24HR Wind/Wave Chart VT00Z Forecast 45W-85W
- 24HR Wind/Wave Chart VT12Z Forecast 45W-85W
- 48HR Sea State VT00Z Forecast 10E-95W
- 48HR Sea State VT12Z Forecast 10E-95W
- 48HR Wave Period VT00Z Forecast 0-90W,20-60N
- 96HR Wind/Wave Forecast 0-90W,20-60N
- 96HR Wave Period Forecast 0-90W,20-60N
Surface Charts
- Tropical Surface Chart Analysis at 12Z
- 00Z Preliminary Surface Chart Analysis 45W-85W
- 06Z Preliminary Surface Chart Analysis 45W-85W
- 12Z Preliminary Surface Chart Analysis 45W-85W
- 18Z Preliminary Surface Chart Analysis 45W-85W
- 00Z Surface Analysis Chart Part 1 10E-45W
- 00Z Surface Analysis Chart Part 2 40W-95W
- 06Z Surface Analysis Chart Part 1 10E-45W
- 06Z Surface Analysis Chart Part 2 40W-95W
- 12Z Surface Analysis Chart Part 1 10E-45W
- 12Z Surface Analysis Chart Part 2 40W-95W
- 18Z Surface Analysis Chart Part 1 10E-45W
- 18Z Surface Analysis Chart Part 2 40W-95W
- 24HR Surface Chart VT00Z Forecast 45W-85W
- 24HR Surface Chart VT12Z Forecast 45W-85W
- 48HR Surface Chart VT00Z Forecast 10E-95W
- 48HR Surface Chart VT12Z Forecast 10E-95W
- 96HR Surface Chart VT00Z Forecast 10E-95W
Upper Air Charts
- 00Z 500MB Surface Chart Analysis 45W-85W
- 12Z 500MB Surface Chart Analysis 45W-85W
- 24HR 500MB Chart VT00Z Forecast 45W-85W
- 24HR 500MB Chart VT12Z Forecast 45W-85W
- 36HR 500MB Chart VT00Z Forecast 45W-85W
- 36HR 500MB Chart VT12Z Forecast 45W-85W
- 48HR 500MB Chart VT00Z Forecast 45W-85W
- 48HR 500MB Chart VT12Z Forecast 45W-85W
- 96HR 500MB Chart VT00Z Forecast 45W-85W
Maritime Podcasts
- Messing About In Ships
- Maritime Accident Casebook
- Great Lakes Maritime Issues
- Shipping Podcasts Online
- Seascapes
- Admiralty Law
Complete List of Blogs
Maritime Blogs
- Adventures Of The Blackgang
- Armchair Captain
- American Shipper
- Baird Capt’s Blog
- BitterEnd Blog
- Boatswains And Bacteremia
- Bridge Log
- BroadlyBoats
- Bryant’s Maritime Blog
- Clay Maitland
- Duluth Shipping News
- Fred Fry’s Maritime Monday
- Great Lakes Maritime Issues Blog
- Inspector’s Blog
- Images Of Fishermen
- IMC Brokers Blog
- Jack Tar Magazine
- Justice For The Hebei Spirit
- Kennebec Captain
- Marine Buzz
- Marine Telecom
- Maritime Accident Casebook
- Marine Cafe Blog
- Maritime Compass
- Maritime Connector
- Marine Institute
- Maritime Licensing Blog
- Maritime News Blog
- MaritimeTerrorism.org
- Maritime Visuals
- Mercy Ships Blog
- Modern Day Pirates
- Naval Architecture
- Navigating The Regulatory Seas
- Offsoundings
- Ocean Rover
- On The Waterfront
- Pinoy Maritime
- Puget Sound Maritime
- Regulatory Seas
- Safe Water
- Sea Fever
- Seafarer Blog
- Seaways
- Ship of the Day
- ShippingTalk
- Shipping In South Africa
- ShipShooter Maritime Photography
- St Augustine Lighthouse
- The Art Of Dredging
- The Maritime Blog
- The Monitor – Marine Engineering
- The Pirate Ships
- Thinkmaritime
- Towmasters
- Towingline
- Tugboat Life
- Ugly Ships
- US Maritime Law
- What color is your NTSB Parachute?
- Wheelhouse Report
The Business Of Shipping
Mariner Blogs
- The Life of a Sea Wife
- The Pilot Boat
- The Yankee Sailor
- Tim’s Times
- Tugster
- Stranded on the Largest Island
- A Shipwright In Training
- Salty Sez
- Red Right Returning
- Peter’s Point
- Never Sea Land
- Misunderstood Mariner
- Monster Maritime
- Kiwi at Sea
- Life At Sea
- Nautical Log
- Old Salt Blog
- Ship’s Record
- Hawsepiper
- Deepwater Writing
- Christiaan Conover (Twitter)
- Bowsprite
- Bills Of Laden
Offshore Blogs
Maritime Weather Blogs
Tall Ship Blogs
Marine Electronics
Cruise Ship Blogs
- The Avid Cruiser
- At Sea With Doug Newman
- Eurodam Blog – Cruise Ship Newbuild
- Holland America Blog
- Ship Happenzz
- MidShip Century
Maritime Finance
Boating
- Craft-A-Craft
- Navagear
- Panbo
- Spinnak3r
- The Cure For Anything Is Saltwater
- Marine Electronics Reviews
- Megayacht News
- 70.8%
- Boating Line
Official Coast Guard Blogs
- AMVER
- RCCNET
- The Coast Guard Compass
- CG Journal
- D13
- iCommandant
- Coast Guard Communications Blog
- National Maritime Security Advisory Blog
*A full list of USCG Blogs can be found HERE
Coast Guard / Lifesaving Blogs
- Another CG Blog
- Brown Hound
- Decisions Of Heros
- Unofficial Coast Guard Blog
- Ryan Erickson.com
- Search and Rescue
- The Coast Guard Report
- Waiting for ships to come in.
- My Coast Guard Career
- Coast Guard News
Coast Guard Podcasts
Navy Blogs
- cdr salamander
- China Defense Blog
- Eaglespeak
- HMS Somerset*
- Information Dissemination
- Maritime Asia*
- Navy Ship News
- The Yankee Sailor
- The Stupid Shal Be Punished
- US Naval Institute
- USS Hawaii
Offbeat Blogs
Maritime Forums
Dynamic Maritime Sites (not blogs)
Professional Organizations & Unions
Have a maritime blog post you would like to share, submit it now.
Looking for a specific post? Try our Ship Search Engine. Once the results are displayed click on the refinement “blogs” to search only the above sites.
Questions? Contact Us
News
- MarEx News Letter
- Workboat.com
- Google News (enter maritime related keyword)
- CAMM News
- MMP Union Weekly News
- AMO News
- Lloyd’s List
- Nautical Institute ALERT!
- RigZone Offshore Drilling News
Government News
- USCG Proceedings Magazine
- USCG Magazine
- MARAD News & Info
- USCG News (Homeport)
- USCG Marine Safety & Security News
- IMO News Magazine
- IMO Latest News
Maritime Blogs
United State Coast Guard
- USCG Ship Information & Certificate Expiration Data
- Certificate of Financial Responsibility Vessel Search & Information
- USCG National Response Center
- Merchant Mariner Outreach System – MARAD Emergency Contact List
- USCG Homepage
- Mariner Information Site
- HomePort
- USCG Navigation Center
- National Vessel Movement Center
- National Vessel Documentation Center
International Regulatory
- The American Bureau of Shipping
- Det Norske Veritas
- Lloyd’s Register
- Marshall Islands Ship Registry
- Liberian Ship Registry
- Panama Ship Registry
- IMO Integrated Shipping Information System
Mailing Lists
ISPS
Training
- USCG Approved Courses Lists
- MITAGS (MMP Union School Maryland)
- PMI (MMP Union School Seattle)
- STAR Center (AMO Union School – Ft. Lauderdale)
- MPT (non-union Ft. Lauderdale)
- GMATS (Kings Point, Long Island NY)
Careers
- SUNY Maritime College (Fort Schuyler)
- California Maritime Academy
- Mass Maritime Academy
- Maine Maritime Academy
- Texas A&M
- Kings Point (New York)
- Military Sealift Command (MSC)
- MARAD
- International Maritime Academies
Miscellaneous
- US boat identification search by name
- List of Shipping Companies
- List of Seaports Worldwide
- List of Offshore Industry Links
- List of Maritime Related Schools Worldwide
- American Merchant Marine at War, History Site
- Fort Schuyler Alumni (SUNY Maritime)
- The Nautical Institute
- Council of American Master Mariners
- Intertanko
- International Association of Drilling Contractors ( IADC )
- Marine Accident Investigators’ International Forum (MAIIF)
- The International Marine Contractors Association
- Directory of Private Weather Services
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