Due to a combination of circumstances there is now a worldwide shortage of storage space ashore for both unrefined and refined oil products of all types. As such there is a now growing demand for oil tankers to be used as floating storage. Owners who receive requests to use their vessel for floating storage should give consideration to the following issues which may arise:
Degradation of the cargo in long term storage, this can be due to a number of factors such as gum formation, bacterial growth, instability of the cargo, settlement of sediments, stratification of component ingredients, etc. It is advisable at the pre-fixture stage, or if already on charter as soon as voyage instructions are received to carry out a thorough risk assessment to ensure that the vessel is designed and capable of storing the cargo for the periods required without any change in specifications that may result in the cargo being rejected by receivers. From a Club cover perspective, it is worth noting that Club cover could potentially be prejudiced where it is evident that the vessel was not fit to carry and store the cargo on board. It is therefore advisable that Members adequately protect themselves either with an indemnity from Charterers or additional cover where possible.
Requests from charterers to mix additives, conditioners into the cargo(es) should be properly investigated to ensure that no deterioration occurs as a result of the same. Any such requests should always be recorded in writing and an indemnity sought from the charterers for any liabilities arising from their request. Any such operation should also comply with all relevant SOLAS regulations and we would recommend using the INTERTANKO Cargo Additive Clause*.
Cargo leeching into cargo tank coatings with adverse effects. Paint manufacturers should be consulted and guarantees sought where possible before agreeing to carry cargoes for prolonged periods to avoid off-spec claims, and to preserve a right of recourse against paint manufacturers, if possible.
Cargo loss due to evaporation, leaks, etc. Some product cargoes are known to have inherent qualities such that the cargo evaporates over a period of time resulting in cargo shortages. It is recommended that Members consider this and allow for any shortages by incorporating a customary allowance in the CP and an indemnity from Charterers for any claims by a third party for losses within the agreed allowance. Extra costs incurred due to heating/circulation of cargo, port dues, supply / generation of fresh water, supply of provisions at remote locations etc. Maintenance of safe anchorage position.