7 K NU NCC ERNAKULAM ANCHOR AND CABLES

7 K NU NCC, ERNAKULAM ANCHOR AND CABLES 1

ANCHOR AND CABLES INTRODUCTION : Whenever a ship wants to hold its position at particular place in shallow waters, anchor is used 2

ANCHOR AND CABLES PURPOSE OF ANCHOR: Anchor is a hook, attached to a length of chain or rope called a cable, by which a ship or a boat can be held temporarily to the sea bed in comparatively shallow water. Types of an anchor : (a) Admiralty Plan Anchor – used for anchoring danbuoy. 3

ANCHOR AND CABLES (b)Admiralty Standard Stockless Anchor – used for older surface ship as stream anchor. (c) Admiralty Class (AC) 14: - maximum holding power after dragging two shank length (d) AC 16 A and AC 17 Anchor: - used for submarine. (e) Stocked close-stowing: - used for small ship like face and boats. (f) CQR Anchor: - used in small craft 4

ANCHOR AND CABLES PARTS OF AN ANCHOR q Anchor ring q Anchor shackle q Shank q Fluke q Pea or bill 5

ANCHOR AND CABLES PARTS OF AN ANCHOR 6

ANCHOR AND CABLES Parts of cable v Lugged Anchor Shackle v Lugless joining shackle v securing to Buoy Shackle v Bottle Screw Slip v Blake Slip v Cup Swivel v Box Swivel v Adaptor Piece 7

ANCHOR AND CABLES 8

ANCHOR AND CABLES 9

ANCHOR AND CABLES Identification of cable Ø The shackle and joining shackle are marked from outer end to its inner end Ø Every joining shackle except one between two half shackles, is painted white Ø One link on each side of a joining shackle is also painted white and marked with a number of turns of seizing wire around the stud corresponding to the number of the joining shackle. 10

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