Search and rescue mapping software developed in Rhode Island was "instrumental" in efforts to retrieve crewmembers from the stricken Rambler 100 off Fastnet last week.

The SARMAP software, developed by ASA (Applied Science Associates, Inc) provides rapid predictions of the movement of drifting objects and missing persons at sea. 

For search and rescue units it can provide search patterns and calculate the probability of containment, probability of detection, and probability of success.

As previously reported on Afloat.ie, the Rambler 100 capsized off the Cork coast while competing in last weekend's Rolex Fastnet Race.

The Rambler 100’s personal locator beacon activated when the yacht overturned, which alerted rescuers to the location of the 16 stranded crewmembers still with the vessel, but recovering the five lost at sea required a more advanced approach.

The Irish Coast Guard used SARMAP’s sophisticated tracking capabilities to predict the movement of the drifting survivors and calculate a precise search area.

"We are very pleased that our software, combined with their rapid decision-making, resulted in such a positive outcome.”