Making cargo holds ready for the next shipment
Preparing cargo holds for the next shipment ranks among the most important tasks on a bulk carrier. Poor cleaning leads to cargo claims — contamination, water damage, shortages — and triggers charterparty disputes over delays and berthing costs.
What determines the required standard
The required cleaning standard depends on several factors. The next cargo drives most decisions. Operators describe requirements using four common terms: hospital clean, grain clean, normal clean, shovel clean and load on top.
None of these terms has a universal definition. What one port accepts as grain clean, another may reject. Charterparties and voyage orders should therefore spell out the exact standard as precisely as possible.
The five cleaning standards:
– “Hospital clean” is the most demanding standard. All hold surfaces — tank top, ladder rungs, and hatch undersides — must carry 100% intact paint.
-“Grain clean” requires the hold to be free of bugs, odours, previous cargo residues, lashings, loose rust scale, and paint chips. The crew must sweep, wash with fresh water, dry, and ventilate the hold before loading. Light surface rusting on exposed steel usually passes inspection. Loose rust scale or paint flakes that could mix with the cargo do not.
-“Normal clean” means sweeping, washing, and drying the holds to a standard suitable for the next compatible cargo.
-“Shovel clean” requires only the physical removal of previous cargo by manual or mechanical sweeping. No washing follows.
-“Load on top” applies to certain cargo types only. It means loading the same commodity directly on top of the previous shipment, with no hold cleaning between voyages.
Minimizing cleaning time and cost
Where possible, masters should use cleaning facilities at the discharge port to remove as much residue as possible before departure. This cuts disposal and cleaning costs and saves time at the next loading port.
Can cargo holds be cleaned in Polish ports?
Polish port authorities apply one clear rule: wash water from hold cleaning at the quay must go to an approved reception facility, either a road tanker lorry or a barge. The vessel cannot retain that water in ballast tanks and leave without discharging it. Deferring discharge to a later port is not acceptable under local practice.
The rule reflects MARPOL Annex V, which governs garbage disposal from ships and covers far more than everyday waste. Under the Annex, cargo residues — including remnants of cargo entrained in wash water — count as garbage subject to strict discharge controls. Wash water from hold cleaning therefore carries a regulatory classification that depends on the nature of the cargo previously carried.
The Annex creates two categories of cargo residues. Those classified as harmful to the marine environment (HME) face a complete ban on sea discharge worldwide. They must go to a shore reception facility without exception. Non-HME residues permit limited sea discharge outside Special Areas under specific conditions.
The Baltic Sea is a MARPOL Special Area under Annex V. That status removes the non-HME discharge option entirely for vessels operating within it. Polish ports sit squarely inside this area. If no reception facilities exist at all, non-HME residues may go overboard as far from the nearest land as practicable — and never less than 12 nautical miles away.
In practice, adequate facilities exist at all major Polish ports, so this exception does not apply.