Definitions for "Coefficient of friction"
A constant varying with the speed, length of surface and condition of surface. This is usually determined experimentally and applied as if it was constant over the full length of the hull. It isn't, of course, but the difference is slight.
In plastics films, indicates the ease with which a film surface is slid against like film or adjacent surface. A low value (near zero) indicates a slippery; a high value (7 or more) indicates a tacky film, which will stick to itself.
A dimensionless number representing the ratio of the friction force to normal force. Typically for threaded connections it is between 0.10 to 0,18 but can vary significantly depending upon the materials used and whether a lubricant has been used.
Keywords:  tile, slip, resistance
Slip resistance of a tile.