Tidelines
Navigating Long Island Sound tides
Long Island Sound is a busy and challenging waterway, with tidal currents reaching up to five knots. Discover how Tidetech’s high-resolution tidal model provides detailed forecasts across the Sound, helping sailors and mariners navigate complex channels, improve efficiency and safety, and make the most of their time on the water.
What is sea level data & how is it collected?
Sea level data is fundamental to understanding and mapping ocean currents. Discover how satellite altimetry measures sea surface height, how these measurements reveal current speed and direction, and why advances in satellite technology are helping mariners gain more accurate insight into dynamic ocean currents such as the East Australian Current, Gulf Stream and Kuroshio.
Long term weather forecasting doesn’t have to be a guess
Weather forecasts become less reliable beyond 10 days, creating challenges for planning long ocean voyages. Discover how Tidetech combines short-term forecasts with detailed climatological data to provide digital extended forecasts for weather, waves and currents, helping mariners reduce uncertainty, optimise routes, improve safety and plan voyages up to 30 days and beyond.
The changing tides in the English Channel
The English Channel is home to some of the strongest and most complex tides in Europe and one of the busiest maritime traffic areas.
The currents in Singapore Strait are extremely complex. Here’s why.
The Singapore Strait is a vital shipping gateway, but its currents are remarkably complex. Influenced by tides, seasonal monsoons and interactions between the Indian and Pacific Oceans, current speeds and directions can change significantly. Discover how understanding these dynamic conditions can help vessels improve navigation, efficiency and just-in-time arrivals.
36th America’s Cup – Auckland tidal currents
Tidal currents can play a crucial role in the high-speed racing of the 36th America’s Cup. Discover how changing current speeds and directions affect true wind, boat speed and tactical decisions, and why understanding tidal differences across the Auckland racecourses could provide teams with a competitive advantage.
Coastal or Ocean Currents – Do you know the difference?
Ocean and tidal currents can significantly impact transit times, from major ocean currents like the Gulf Stream and Kuroshio to powerful coastal tides. Discover how these currents form, interact and influence vessels, and how understanding their behaviour can help shipping operators optimise routes, save fuel and reduce emissions.
How hindcast weather and ocean data can optimise vessel performance
Hindcast weather and ocean data can reveal how environmental conditions have impacted vessel performance in the past. Discover how analysing historical wind, wave and current data can help shipping companies benchmark performance, optimise future voyages, reduce fuel consumption and emissions, and build more accurate digital twins of their vessels.
Narragansett Bay high resolution tidal model
Due to high demand, Tidetech released a limited-edition high-resolution tidal model covering Narragansett Bay and Rhode Island Sound for Rolex New York Yacht Club Race Week. With 110m resolution and 60-minute intervals, the model provides detailed tidal data across the region’s key racing areas, available as GRIBs or PDF images.
GRIB tidal currents for Long Island Sound
Long Island Sound is a challenging sailing environment, with strong tidal currents that can reach up to 4 knots. Discover how Tidetech’s new 110m-resolution model captures the complex currents around key locations, helping navigators better understand conditions and make more informed decisions on the water.
Navigating the Strait of Gibraltar tides
The Strait of Gibraltar is one of the world’s most complex shipping routes, shaped by contrasting water densities, salinity, evaporation, tidal currents and internal waves. Discover how these forces interact to create challenging conditions for vessels — and why accurate modelling is essential for safe and efficient passage.
The best weather data sources available
Choosing the right weather data source can be challenging, with global models varying in accuracy depending on location, forecast period and atmospheric conditions. Discover how major meteorological models compare, why observations are critical to forecast accuracy, and what mariners should consider when selecting weather data for their applications.
‘Won and Lost’ in the Derwent
The final miles of the Sydney to Hobart can make or break a race, with complex currents adding another layer of challenge. Discover how tides, wind-driven currents, freshwater outflows and larger ocean currents combine in Storm Bay and the Derwent, and how understanding these conditions can give savvy navigators a competitive edge.
Tidetech and Adrena Navigation Software
Tidetech’s integration with Adrena Navigation Software gives sailors access to worldwide tidal streams and ocean current data in GRIB format. Discover how accurate current data can help navigators calculate precise ETAs, optimise routing, understand current influence and improve tactical decision-making for both cruising and competitive sailing.
Made Smart Group enrols as Tidetech value added OEM resupplier
Tidetech has partnered with Made Smart Group to provide high-quality weather and oceanographic data through its maritime software solutions. Discover how integrating forecasts, tidal currents, nautical charts and vessel tracking can give maritime professionals faster access to critical information and support more informed voyage planning and operational decisions.
Singapore Malacca Straits model upgraded to include tidal surge
Real-time water levels and surface currents are reshaping how navigators plan a voyage. Tidetech's chief scientist Roger Proctor explains why S-104 and S-111 treat tides and currents as live information rather than background context.
Straits of Gibraltar tidal model
Our new tidal model explores the complex currents of the Strait of Gibraltar, where differences in salinity, powerful tides and underwater waves shape water movement. Discover how these forces influence vessels entering the Mediterranean — and how Mediterranean water travels across the world’s oceans.
New tidal optimisation reveals significant bunker savings
Tidal optimisation can significantly improve shipping efficiency by helping vessels time transits and adjust speeds to take advantage of favourable currents. Discover how Tidetech’s high-resolution tidal data can support more efficient passage planning, reduce fuel consumption and costs, and improve scheduling for commercial shipping and ferry operations.
Tricky approaches – it all hangs on Hobart
The final miles of the Sydney to Hobart Yacht Race can be some of the most challenging, with fickle winds, complex tides and river outflows creating unpredictable conditions. Discover how Tidetech’s high-resolution oceanographic data for southeast Tasmania helps skippers and tacticians understand local currents and make more informed decisions approaching Hobart.
East Australian Current
The East Australian Current (EAC) is a powerful ocean current that shapes Australia’s east coast. Discover how warm tropical waters, eddies and changing ocean conditions influence the EAC, and why its strengthening and southward movement could have significant implications for the Sydney to Hobart yacht race.
Inside track – how Tidetech’s data influences real tactical decisions
How is Tidetech data actually used to influence tactical decisions and support racegoers around the world.