Navigation & Seamanship

Port Operations Management System (POMS)

NOAA Tides and Currents

Complete Sun and Moon Date for One Day

Phases of the Moon

Digital Nautical Charts Homepage

Notice to Mariners

Local Notice to Mariners

Canadian Notices to Mariners

Light Lists

Nautical Publications

Nautical Calculators

Speed Distance Time Calculator

The Practical Navigator

Navigation Training (YouTube)

Animated Knots

US Coast Guard Navigation Center

Advanced Coastal Navigation Course

Flags, Pennants, Honors, Ceremonies, and Customs

Navigation, Seamanship, and Shiphandling Training Program (NSS)

Chart No. 1

Naval Oceanography Portal

NOAA National Data Buoy Center

Sun or Moon Rise/Set Table for One Year

Astronomical Applications

Rules of the Road (NavRules)

Summary of Corrections

U.S. Aids to Navigation

List of Lights

Broadcast Warnings

US Naval Observatory Master Clock Time

Worldwide Threats to Shipping Reports

Three & Six Minute Rules

Weather (NOAA/NWS)

Naval Oceanography Operations Command (NOOC)

United States Naval Observatory – Washington, D.C.

Naval Ice Center – Suitland, Maryland

Naval Atlantic Meteorology and Oceanography Center (NLMOC) – Norfolk, Virginia

Naval Maritime Forecast Center/Joint Typhoon Warning Center (NMFC/JTWC) – Pearl Harbor, Hawaii

US Naval Observatory Master Clock Time

Coastal Wind Profiler Page

Destructive Weather Planning Guide

Naval Meteorology & Oceanography Command (CNMOC) – Stennis Space Center, Mississippi

Fleet Numerical Meteorology and Oceanography Center (FNMOC) – Monterey, California

Naval Research Laboratory, Marine Meteorology Division

Naval Oceanography Antisubmarine Warfare Center, Fleet Activities, Yokosuka, Japan

Naval Oceanography Antisubmarine Warfare Center, Fleet Activities, Sasebo, Japan

Shogun Weather - 18th Operations Support Squadron, Kadena AB, Japan