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Climate change: One slipping under the radar, the Thwaites Glacier

Posted by Roger Proctor on 23 January 2022 1:42:03 PM

After the disappointing outcomes of the COP26 meeting in November to address the IPCC 6th Assessment requirements over the coming decades, a potentially more immediate existential threat to global sea level rise was discussed in a press conference at the American Geophysical Union Fall Meeting in December. Titled “The threat from Thwaites: The retreat of Antarctica’s riskiest glacier”, the hour-long presentation discussed the mid-term status of the International Thwaites Glacier Collaboration (ITGC) 5-year study into the stability, or rather instability, of the Thwaites Glacier or ‘Doomsday Glacier’ in popular terminology.

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Rolex Sydney Hobart Yacht Race 2021: Where is the EAC?

Posted by Penny Haire on 26 November 2021 3:06:14 PM

The Course to Hobart has distinct stages. 

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Topics: Sydney to Hobart, sailing, East Australian Current, tides, optimised route, Tidemap, grib, yacht race, yacht racing

Vineyard Race 2021 - GRIB Tidal Currents

Posted by Penny Haire on 20 August 2021 5:23:58 PM

Are you entering the 2021 Vineyard Race?

The complex strong tidal currents at the eastern end of Long Island Sound can be challenging for even the most experienced race navigators.

Key questions need to be considered. Will you depart Long Island Sound via The Race, Plum Gut, or The Sluiceway? What are your tactics for the return back into Long Island Sound on the way home? How you negotiate these complex and strong tidal currents could be the difference between a good race and a Great Race. 

Fortunately, Tidetech has accurate high-resolution tidal current forecast models for the entire course available in GRIB format. This allows you to make the best navigation decisions giving you more time to simply sail fast and gain an advantage over your closest competitors. 

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Topics: currents, Expedition, sailing, yacht, racing, optimised route, high resolution model, grib, yacht race, Vineyard Race

Rolex Fastnet Race 2021: Winning is in the Details

Posted by Penny Haire on 21 June 2021 5:39:52 PM

The prestigious Rolex Fastnet Race is just a few weeks away, and competitors who have the most accurate data on hand will be able to make the best possible decisions for the fastest route.
The Fastnet is genuinely a navigators' race, as it challenges competitors to negotiate some very tricky tidal situations - such as whether to head offshore for pressure or tuck inshore to avoid the worst of an adverse tide. This year's race is exciting because it's finishing in France for the first time, and the last section involves negotiating the notorious Alderney Race, with currents of up to 9 kts.

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Topics: sailing, tides, English Channel, Tidemap, grib, yacht race, yacht racing, Fastnet

GRIB Tidal Currents for Chesapeake Bay

Posted by Penny Haire on 4 June 2021 12:31:51 PM

We are very pleased to release a new model of Chesapeake Bay in time for the Annapolis to Newport Race! Sourced from NOAA the model covers the entire bay in incredible detail, showing for the first time the complexity of the currents everywhere in the Bay from Annapolis to Cape Charles, including the Potomac River.


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Topics: currents, Expedition, sailing, yacht, racing, optimised route, high resolution model, grib, yacht race, Vineyard Race

Navigating Long Island Sound Tides

Posted by Penny Haire on 13 April 2021 6:21:02 AM

At approximately 110 miles long, with a large population base on its' shores and abundant natural beauty, Long Island Sound is one of the busiest waterways in the United States. As you can see from the image below most vessels navigating the Sound are recreational, although there are also numerous passenger vessels and fishing traffic.

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Topics: long island sound

What is Sea Level Data & How is it Collected?

Posted by Penny Haire on 7 April 2021 11:42:27 AM

The creation of ocean current maps depend on the measurement of sea level, which is the base level for measuring elevation and depth on Earth.

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Topics: currents, ocean

The Changing Tides in the English Channel

Posted by Penny Haire on 4 March 2021 3:11:13 PM

The English Channel is home to some of the strongest and most complex tides in Europe. It is one of the most heavily trafficked locations in the world, with many different types of vessels transiting east and west through the Channel or crossing between ports in southern England and Europe.

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Topics: English Channel

Long Term Weather Forecasting Doesn’t Have to Be a Guess

Posted by Penny Haire on 4 March 2021 3:10:54 PM

No matter how advanced technology becomes, weather forecasting will always carry a degree of uncertainty. Nature is unpredictable, but by combining powerful technology with data, we can produce reasonably reliable evidence-based forecasts for up to ten days.

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Did you know that 90% of coastal seas have no tidal data available?

Posted by Penny Haire on 26 January 2021 9:59:55 AM

Traditionally, there has been little tidal information available to the public other than height predictions for major (standard) and minor (secondary) ports; even fewer tidal current predictions are available to Mariners other than a limited number of tidal diamonds and tidal stream atlases. These data have traditionally been published by official sources, such as Hydrographic Offices.  

Although useful for indicating conditions at the start and end of a journey, this data on its own doesn't provide the level of detail that mariners need for their chosen waterborne activity. In this article, we cover the traditional methods for tidal measurement and their shortcomings and modern technological advancements that can revolutionise the maritime industry in terms of tidal information.

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Topics: tides, tidal model, high resolution model, tide-surge forecast

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