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Securing. Objectives. State what stresses are experienced. Explain forces and motions which create stress Describe the various form of cell guides Name, distinguish and recognize the various lashing devices and materials Interpret correctly a securing plan of a ship. Racking. Toppling.
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Objectives • State what stresses are experienced. • Explain forces and motions which create stress • Describe the various form of cell guides • Name, distinguish and recognize the various lashing devices and materials • Interpret correctly a securing plan of a ship
Securing Systems should be • Simple • Easily handled • Quick to use • Safe and reliable • Easily maintained • Strong • Not to heavy
Securing System Types • 1 Cell guide systems • 2 Non locking connectors • 3 Locking connectors • 4 Lashing devices
Lashing Systems • 1 Chains • 2 Steel wires • 3 Rods
Against Heavy Difficult to handle For Easy to adjust length Do not kink Need little maintenance Stretch only slightly ( DIS ) Advantages of Chains
Against Stretches Kinks Easily over tensioned Rusts and frays Needs frequent maintenance Handling not easy to top tiers For Lighter than chains Easier to handle (Dis) Advantages of Steel Wire
Against Long rods difficult to handle Not easy to attach at angle For Relatively easy to handle Easily attached to upper tiers from base Easy, quick attachment no maintenance needed Last longer than wires (Dis) Advantages of Rods
Lashing • Not too Loose • Not too Tight • Do it just Right
Securing Specials • 1 Temperature controlled containers • 2 Oversized cargoes and containers • 3 Uncontainerized cargoes to be secured on containers • 4 Uncontainerized cargoes carried as such
Standard Securing Tools • Spanner / Adjustable wrench • Turnbuckle wrench • Marlin pin • Actuator pole • Portable ladder