There are many things to consider before loading a bulk cargo, and foremost in these considerations
are the safety of personnel, and the safety of the vessel.
As much information as possible is to be gathered about the cargo to be loaded. Even though the
vessel may be carrying the same standard cargo e.g. gypsum, the condition of the cargo may differ
every other voyage, and thus its stowage factor. The ratio of rock to fines will vary, and the exposure
of the pile to weather conditions, will affect its flow ability.
When declaring the amount which can be loaded, due attention is to be paid to limitations and draft
restrictions imposed in the loading and discharging ports, seasonal draft restrictions, bunkers to be
taken, the expected stowage factor of the cargo and, the Charter Party requirement. The Salt Water
Arrival Draft, or Fresh Water Arrival Draft at the discharge port will be stated in the immediate voyage
instructions issued by the Owners, or their Representatives. If the voyage instructions do not state the
required arrival draft at the disport, the Master must obtain this from the Owners or their
Representatives before loading.
The water level in rivers is affected by sustained winds in the same direction, and may be more or less than that stated in the voyage instructions. The Master, however, must ensure that the vessel’s arrival draft at the discharge port is as per the requirement of the immediate voyage instructions. The Master must, on departure load port, declare his sailing draft and the calculated arrival draft (at disport) to all parties. The Master is to refer to latest nautical publications and notices to ensure that the draft stated in the voyage instructions closely matches, and allows for the underkeel clearance. The passage of the vessels in shallow waters is subject to the effects of squat etc, and this in turn affects its manoeuvrability.
A preliminary loading plan for the sequence and stowage of cargo, for the amount of uplift calculated based on; the loading rates, deballasting rates, and within the permissible stresses at each sequence, is to be drawn up by the Chief Officer and presented to the Master for approval.
The priority must always be to ensure that the proposed cargo can be safely loaded, and ensuring that the vessel has adequate stability for all stages of the intended voyage, and in the event of multiple discharge ports. This is particularly important for grain cargoes, to ensure that grain moments are within acceptable limits when proceeding between ports with partially filled cargo compartments. The distribution of cargo must always be such, that the vessels bending limits are never exceeded as defined in the builders manual for dynamic seaway conditions. The in port static vessel loading, and deballasting sequences must be within the prescribed limits at all times.
A copy of the loading plan must be handed to and discussed with shore/terminal representatives when completing the ‘Ship/Shore Readiness Checklist’. The shore loader must adhere to the loading plan and sequences therein. Caution must also be exercised when loading in a manner which requires any hold or holds to remain empty, or when loading different grades where a hold-wise pattern of loading may be insisted upon. If there is any doubt that the vessel may be over stressed in any way during loading or discharging, the operations must be ceased immediately, and not recommenced until such a time as the situation has been re-checked and you are satisfied that the operations can continue without harm to the vessel. The times of high and low water at berth are to be calculated by the navigating Officer, and are to be written on the Loading Plan.
OTHER LOADING CONSIDERATIONS
It has sometimes been customary to use the shore loaders counter figures for the Bill of Lading. These belt counters, or weight sensors are not always accurate, and if the difference between the draft survey figures and those obtained from the shore weight counter is substantial, a Protest of Difference is to be issued and the facts documented. The Company and the Owners must however be informed prior to such a letter being issued.
Before loading the cargo, the Master must satisfy himself that the vessel has the capability to maintain the condition of the cargo in the same condition as that when it was loaded, taking into account the type and amount of ventilation required, the instruments required for monitoring are on board and their calibration valid and any segregation/separation requirements. If any doubt exists, the relevant Management Office must be contacted immediately in order to make arrangements in advance for any remedial action required, and avoid unnecessary delays to the vessel.
SEGREGATION OF VARIOUS GRADES (LOADING)
The planning and segregation of grades is very important for the avoidance of cargo claims.
The sequence of loading of the various grades must be agreed with shippers and shore personnel. The planned sequence of the ‘Loading Plan’ must be accepted and approved by the Shore Terminal. All means of communications between ship and shore are to be tested. Clear information and instructions must be provided by the shore personnel at completion and change of grade.
The Duty Officer is required to visibly ensure that the shore loading/conveyor system is absolutely clear of the previous grade and to request the shore to verbally confirm the same. If, when inspecting the cargo loaded in the holds, any contamination or non uniformity in the cargo is observed, this must be immediately brought to the notice of the Shore Foreman or authorised person. If the doubt persists the Company must be informed.