These pliers are a step up from ChannelLocks. The jaws can grip a bolt head witout slipping.
On the public-list, Mike said that
Irwin GrooveLock pliers
were "the best damn pliers I ever bought."
A serious magazine for serious sailors. This magazine deals extensively
with all sorts of navigation, from ded reckoning to radar and GPS. Also
significant coverage of other issues of offshore (or other challenging) sailing.