LASHING COMPONENTS | CONTAINER SHIP EXPERIENCE
Summary
TLDRThis video script explores the crucial elements of container ship lashing systems, focusing on fixed and loose fittings. It delves into the roles of cell guides, flush sockets, twist locks, and various types of lashing components, highlighting their importance in securing containers during transit. The script also touches on less common fittings and emphasizes the necessity of adhering to safety standards and certifications for loose fittings.
Takeaways
- π’ Fixed Fittings: The script mentions various fixed fittings attached to the ship, such as cell guides and flush sockets, which are essential for securing containers.
- π© Flush Sockets: These are used for locating base twist locks or stacking cones in the cargo hold and are designed to ensure water tightness.
- π Raised Sockets: They are used for locating base twist locks or stacking cones on the deck.
- π Tie Down Points: The script explains the importance of tie down points for securing turnbuckles on the deck or hatch cover, emphasizing the risk of damage from out-of-plane loads.
- π D-Rings: As alternative tie down points, D-rings are highlighted for their resistance to corrosion and suitability for in-plane and out-of-plane loading.
- π Dovetail Foundation: This base is crucial for sliding dovetail twist locks, which are part of the lashing system.
- π« Horizontal Movement: The script discusses cell guides and mid-bay guides that prevent horizontal movement of containers, ensuring they stay in place during transit.
- π© Loose Fittings: These are not permanently attached to the ship and must be certified by a recognized authority, including lashing rods and extension pieces.
- π Twist Locks: The script differentiates between automatic and manual twist locks, explaining their roles in securing containers in stacks.
- π Stacking Cones: These are placed between containers in a stack and slot into corner castings to secure the load.
- π Load Equalizing Devices: Mentioned as a way to balance the load between paired lashings, ensuring even distribution of weight.
Q & A
What are the primary functions of cell guides on a container ship?
-Cell guides are pillar-like structures with recesses on all four sides designed to fit container corners, preventing horizontal movement of containers and ensuring they are securely held in place.
What is the purpose of flush sockets on a container ship?
-Flush sockets are used for locating base twist locks or stacking cones in the cargo hole and are normally fitted over a small recess to ensure water tightness.
What is the role of tie down points on the deck or hatch cover of a container ship?
-Tie down points are designed for in-plane loading and securing containers with turnbuckles. Out of plane load could bend the plate and may crack the connecting weld.
Why is corrosion of the pin ends a concern for D-rings on a container ship?
-Corrosion of the pin ends can weaken a D-ring, which is an alternative tie down point for turnbuckles and is suitable for in-plane and out-of-plane loading.
What is the purpose of mid-bay guides on a container ship?
-Mid-bay guides are fitted at the tank top level to prevent transverse movement of 20-foot containers and 40-foot containers, ensuring stability during transit.
What are loose fittings in the context of container ship lashing?
-Loose fittings are not permanently attached to the ship and include components like lashing rods or bars, extension pieces, and buckles, which must be certified by a class or recognized authority.
What is the function of a lashing rod or lashing bar on a container ship?
-A lashing rod or bar provides support for container stacks on the deck and is used in conjunction with a turnbuckle to secure the containers.
How does a twist lock secure containers in a stack?
-A twist lock is placed between containers in a stack and locks into corner castings above and below, automatically locking into the lower container when placed on top and unlocked manually.
What is the difference between a fully automatic twist lock and a manual twist lock?
-A fully automatic twist lock locks into container castings above and below without manual intervention, while a manual twist lock requires locking after fitting, mostly used to secure containers to the deck.
What is the purpose of a stacking cone in container lashing?
-A stacking cone is placed between containers in a stack and slots into corner castings to secure the containers together during transport.
What is the role of a load equalizing device in container lashing?
-A load equalizing device is used to balance the load between two paired lashings, ensuring even distribution of weight and preventing strain on individual components.
Where can detailed information about lashing materials be found on a container ship?
-Detailed information about lashing materials can be found in the cargo securing manual that is kept on board the ship.
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