All other nautical software displays only the "NOAA" points, available to all as public information. These points are few
and far between, spaced too far apart and at random locations unsuitable for interpolation. These currents cannot be incorporated into course corrections, layline corrections or routing computations, all of which require a continuous current distribution over the venue. (See below in San Francisco Bay)
Local Knowledge is unique in developing a hydrodynamic current model in each venue that enables our software to compute current at every point and time. Our default setting displays several times the number of points shown by other programs, indicating both direction and magnitude. The user can add as many additional points as desired, or switch to the alternative vector display.
TYPICAL CURRENT DISPLAY IN OTHER PROGRAMS
DEFAULT CURRENT DISPLAY IN OUR PROGRAMS
ALTERNATIVE VECTOR DISPLAY

The default display points are only the tip of the iceberg. We compute current at every point, as illustrated by the alternative "vector" display at the right. In this display the same number of vectors appears at every zoom scale: the further you zoom in, the higher the resolution of the current vector display. The actual resolution of the underlying model varies depending on the complexity of the current distribution. In venues in which currents vary greatly over very short
distances, such as in San Francisco Bay, the resolution can be .05 nm, or less, providing the detail necessary for racing.
OTHER EXAMPLES OF OUR TIDAL CURRENTS
High Resolution Current Models
Tidal Current Models
For Ocean Currents, Click Here
Chesapeake Bay, from Entrance (below) to Baltimore Harbor
Long Island Sound, from Larchmont through The Race (below)
Block Island (below) to Nantucket, Including Narragansett Bay & Buzzard's Bay
United States Tidal-Current Regions
San Francisco Bay - San Pablo Bay
Puget Sound
Rosario Strait - San Juans
New York Harbor - Raritan Bay
Long Island Sound
Block Island to Nantucket
Gulf of Maine - to Halifax
The Chesapeake Bay
Charleston Harbor & Approach
Tampa Bay
Key West
Other Tidal-Current Regions
Isle of Wight - English Channel to Fastnet
The North Sea
Coast of France
Auckland - Haraki Gulf
Sydney Harbor
TO HOME PAGE
TO OCEAN CURRENT PAGE
UK-NORTH SEA CURRENTS