A small boy once asked me: What's a heaving line? Being full of mirth as well as blarney, I replied that it is a lifeline for sailors when they are seasick.
Bradford's "Glossary of Sea Terms" however defines a heaving line as "a light line weighted at its end to aid in throwing to a pier or another vessel, as a messenger for a heavy line.
It is reproduced here in the form of a key chain and necklace, but made and loaded in the same way as would be found on any ship of wharf in the 1800s.
This key ring will float several keys yet is light weight. It is large enough not to get lost in the bottom of your gear bag. White cotton line with brass ring. 4" long.
(Choose color; Red,White,Blue,Black)