The specific stars used in celestial navigation — the navigational stars, as listed in the nautical almanac — are distributed across the sky in ways that give the navigator options regardless of which direction the vessel is heading or which part of the sky is clear. Ashcraft’s daily noon sun sights were the primary navigation observations; additional star and planet sights would have provided redundancy and position checks.
The ocean also provided. The North Equatorial Current that carried her toward Hawaii was not an accident; it is a permanent feature of the Pacific’s circulation, driven by the trade winds that blow from northeast to southwest across the tropical ocean. The current’s existence is documented in every pilot chart of the Pacific, one of the standard reference tools carried by offshore vessels. That the pilot charts survived the capsize in readable condition, and that Ashcraft was able to identify and use the current, reflects both good fortune and competence.
—
## Dehydration and What It Does
The water rationing that Ashcraft maintained across 41 days of ocean sailing deserves more attention than it typically receives in brief accounts of her survival.
A human being requires approximately two liters of water per day under moderate conditions to maintain normal physiological function. At sea in the tropics, with physical exertion — pumping, steering, handling lines — the requirement increases. Saltwater intrusion from the capsize had reduced the available fresh water supply; the specific quantity that survived the capsize is not documented in the sources consulted for this article, but it was clearly insufficient for unrestricted consumption.