The disadvantages of a cell phone in emergencies and why VHF and cellular service should not even be thought of for the same purposes.
A hand-cranked energy source for charging your cell phone when away from normal power sources. Company uses profits to distribute its products for humanitarian purposes in developing countries.
Gear for enhancing cellular connections from a boat. Includes antennas and mounts,
Why the US Coast Guard does not advocate cell phones as a substitute for FCC radio distress methods.
A small-boat cruiser tells you how to build a directional antenna to amplify wireless signals when you are otherwise just out of range.