I'm not sure which answer you are looking for but two things come to mind when i think of cobalt. i know cobalt is an element on the Periodic Table. i got this from http ://education.jlab.org/itselemental/ele027.HTML
Atomic Number: 27
Atomic Weight: 58.933195
Melting Point: 1768 K (1495°C or 2723°F)
Boiling Point: 3200 K (2927°C or 5301°F)
Density: 8.86 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 4 Group Number: 9 Group Name: none
cobalt is also a brand of boats.