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Holding Tanks
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Category guide
- What are Holding Tanks?
- Holding tanks store black water (sewage) and grey water for treatment or discharge to shore facilities. Tanks are used when treatment systems are not installed or when shore discharge is required.
- What standards apply to Holding Tanks?
- Products in this category typically reference MARPOL Annex IV. Specific requirements may vary by flag state.
- Buyer requirements
- Procurement typically requires Capacity (L) and Material (Steel; Stainless Steel; GRP; Polyethylene) to match voyage length and crew size. Vent Arrangement, Level Indicator, and Discharge Connection are critical, as proper venting prevents odor and pressure buildup.