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.
Cobalt is a chemical element with the symbol Co and atomic number 27. It is a hard, lustrous, silver-gray metal commonly used in various industrial applications, such as in the production of rechargeable batteries, magnets, and in the creation of pigments for ceramics and glass. Cobalt compounds are also used in the manufacture of some medical devices and as catalysts in chemical reactions.