Often, when a ship calls at a port or berth, it is expected to arrive, dock, and depart safely with minimal disruption. Charter party agreements typically adhere to the standard requirements of ‘one safe port/always afloat’. However, ships sometimes need to rest safely aground in a NAABSA port, reports Britannia.
What is NAABSA?
NAABSA stands for ‘not always afloat but safely aground’. Charterers may direct ships to specific ports that, while not explicitly named, fall under a broad authorization covering designated regions or continents. This blanket authorization often includes ports operating under the NAABSA protocol. Occasionally, the master may overlook whether the port they are calling at is a NAABSA port.
NAABSA in Charterparty
NAABSA ports are where it is customary and accepted for ships to ground or rest on the seabed, especially in areas with significant tidal variations. NAABSA clauses are incorporated to prevent charterers from breaching the ‘always afloat’ requirements found in most charter parties (C/P). Shipowners or managers seek to include a NAABSA clause in their C/P wordings to protect their interests, sometimes adopting the Baltic and International Maritime Council’s (BIMCO) NAABSA C/P wording.
BIMCO NAABSA Charter Party Wording
This wording, added to existing berthing provisions, allows ships to lie safely aground at any safe berth or place where it is customary for similar vessels to lie, provided the charterers confirm in writing that the berth is on a soft bed and safe. Charterers must indemnify owners for any loss or damage resulting from lying aground, including the costs of underwater inspections required by the ship’s classification society.
Key Considerations
Shipowners or managers should provide clear guidance on NAABSA procedures in their Safety Management System (SMS) for masters and crews. The master should verify with the charterer and local agent that the nominated port is indeed a NAABSA port and obtain detailed information about the berth, including depths, seabed nature, and potential obstructions.
Pre-Arrival
- Ensure navigational charts and tidal information are up-to-date.
- Change the cooling water intake to avoid compromising the ship’s performance.
- Ensure mooring lines are in good condition.
After Alongside
- Conduct risk assessments with port operators and stevedores.
- Confirm loading/discharging rates and the timing of resting aground.
- Check the water depth and nature of the seabed around the ship.
- Post notices that steering gear should not be operated before confirming the ship is fully afloat.
When Resting Aground
- Check for signs of indentation or damage.
- Be cautious of sudden listing caused by an uneven seabed.
- Have emergency procedures in place, including pollution control measures.
- Be prepared to activate the ship’s contingency plan if the ship does not refloat at the expected time.
After Refloating
- Inspect the hull for potential damages.
- Conduct thorough safety checks of all systems.
- Ensure the steering system and rudder can turn freely.
- Keep records of timing and condition checks after refloating.
- Carry out an underwater survey if required by the class.
NAABSA operations can improve turnaround time but demand detailed preparation and strict adherence to safety protocols. To ensure a safe NAABSA operation, it is crucial to understand the ship’s capabilities, engage appropriate charter party clauses for legal protection, and take practical steps to mitigate risks. While the BIMCO clauses on NAABSA offer guidance, shipowners, and charterers should mutually agree on a standardized contractual clause to manage risks and maintain a cooperative relationship for a safe port call.
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Source: Britannia
