> The chain connecting the anchor to the ship is of heavy construction with a breaking strength much higher than required. Forces acting on the ship whilst riding anchor:. The forces acting on a ship riding anchor is described as under. It should be understood that the greater the holding force, the larger time required to haul up the anchor. Whereas in a sailing ship the ship is normally anchored deep inside the natural harbour where the severity of the sea condition does not reach. ![]() > In the worst condition it can lead to capsizing of the ship especially if it is in light condition or in the best condition drag anchor and run aground ashore. A stock anchor will take longer time to haul up and therefore endanger the safety of the ship. > The reason for this requirement of lightness is that the anchor has to be hauled quickly (within 30 minutes maximum ), when the weather deteriorates during anchor stay and the ship has to haul up the anchor and proceed to sea. > The modern stockless anchor has a holding strength of five times its weight in Newtons, whereas the ancient or primitive stock anchor has a holding strength of ten times its weight in Newtons. The modern ‘Bower stockless anchor’ is in existence since the days of steam propulsion and has been developed to suit the stowing arrangement in the hawse pipe of the ship and with a lower holding strength than the stock anchor.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |