Why are two cargo securing manuals required?

flowchart LR
    A[SOLAS VII/5] -->|requires| B[Cargo Securing Manual]
    C[CSS Code] -->|requires for container ships| D[Container Securing Manual]
    B --> E[Ship's own securing arrangements]
    D --> F[Container-specific lashing & stacking]

• Purpose: Cargo securing manuals provide approved methods and data to stow and secure cargo safely throughout the voyage
• First manual: SOLAS regulation VII/5 requires an approved Cargo Securing Manual for every ship carrying cargo other than solid or liquid bulk
• Second manual: For container ships, the CSS Code and IMO guidelines require a Container Securing Manual with container-specific lashing data, stack weights and securing arrangements
• Distinction: First manual covers ship’s own securing arrangements; second covers container cargo units themselves
• Chief Engineer: Ensures both manuals are on board, approved, and used; verifies devices match manuals and crew are trained