Oceanweather Inc.
Offers global, regional, and site specific forecasting based upon aggregate wind barb, current and sea surface temperature (SST) data.
http://www.oceanweather.com/

WWW Tide/Current Predictor
Generates predictions for harmonic tide and current conditions. Features links to related resources. Hosted by the Department of Biological Sciences, University of South Carolina.
http://tbone.biol.sc.edu/tide/sitesel.html

Weather Navigator - World Offshore Observations
Find forecasts based upon station plot maps divided by region. Generated by the Weather Research Center.
http://www.wxresearch.com/off.htm

National Boating Weather Report
Provides forecasts for small craft surface operations. Includes 12 and 24 hour prediction maps for US coastal waters.
http://www.marinersguide.com/weather

iWindsurf.com - Wind and Forecasts
Offers information on wind and current conditions for US and Canadian waterways.
http://www.iwindsurf.com/windandwhere.iws

Storm Warning: Advancements in Marine Communications and Forecasting
Provides information on the wreck of the Edmund Fitzgerald and the fall storm season on the Great Lakes. Find forecast and warnings definitions and related links. Hosted by the Marquette, Michigan National Weather Service.
http://www.crh.noaa.gov/mqt/fitzgerald/

Marine Weather @ Weather.org
Provides forecast map of US waters based upon wind speed and mean-sea-level pressure (MSLP) data. Also features links to forecasts for major US ports.
http://weather.org/marine_weather.htm

NOAA Marine Observation Backbone
Portal maintained National Oceanic and Atmospheric Administration (NOAA) locate and identify, and provide links to line offices and their observing systems.
http://mob.ndbc.noaa.gov/cgi-bin/mob.cgi

Captain's Weather
Features forecasts from the Canadian Maritimes to the US Gulf coast from data derived from the US National Weather Service and Environment Canada.
http://www.captainsweather.com/

YBW.com Weather
Find location and shipping forecasts for UK coastal waters. Includes 14 day tide tables.
http://www.ybw.com/weather/home.html

SailFlow
Weather service designed specifically for nearshore sailors. Provides animated radar, satellite, and wind information.
http://www.sailflow.com

Marine-meteo.com
Marine forecasts including pressure, winds, and waves for France, Europe and World in English and French.
http://www.meteo-marine.com/

Decoded Offshore Weather Data
Features worldwide coverage of buoy data charts. Hosted by Florida State University.
http://www.coolwx.com/buoydata/

Gulf of Maine Ocean Observing System
Provides recent and historical weather and oceanographic information about the Gulf of Maine from buoys, satellites and models.
http://www.gomoos.org

Tides Winds and Weather
Graphic tide charts and moon phase, marine weather forecast and weather warnings, real-time buoy reports, local weather radar, aerial photos for over 500 locations.
http://www.thiswaytothe.net/tides/

Intellicast.com - Marine
Provides sailing forecasts based upon weather and wind. Find satellite and radar imagery, and links.
http://www.intellicast.com/Planners/Marine/

Weatherzone - NSW/ACT Marine Weather
Find warnings, wind speed and mean-sea-level pressure (MSLP) data charts, swell conditions, and forecasts for Australian waters.
http://www.weatherzone.com.au/marine/index.jsp

PassageWeather
Global wind and wave forecasts for around the world. Includes surface winds, wave height and direction, and atmospheric pressure maps.
http://www.passageweather.com