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SAFETY4SEA

BRM: Avoiding the Single Point of Failure

by The Editorial Team
December 10, 2018
in Maritime Knowledge
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The fundamental principal in Bridge Resource Management (BRM) is that vessel navigation and operation is not one-man show. BRM makes use of all available resources onboard (equipment, information, human resource) to ensure the safe completion of vessel’s voyage. Likewise in all operating systems, the navigation and handling of vessel should be protected by a single point of failure.

A point subject to single point of failure is the part of equipment (or operating system) which if it fails will stop the system from working or lead to a failure. Single point of failure does not only apply to equipment and machinery components. During a decision making procedure, such as navigation and shiphandling, taking critical decisions without consulting an established system’s experience and procedure may lead to a potential single point of failure.

The following case refers to an incident in which lack of BRM is identified as a major cause. While the consequences of lack of BRM as seen in many accident reports are indeed severe, there are many reasons that BRM is not effectively applied onboard; in this regard, one important goal is to eliminate the single point of failure.

The incident

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On 31st of October 2018, a Ro-Ro passenger vessel while maneuvering in port of Barcelona collided with a shore crane, causing fire on dock as the crane collapsed. Fortunately no one was injured; the incident is currently under investigation by competent authorities.

By coincidence, few days later MAIB issued the investigation report of a container carrier which conducted a heavy contact with the quay and two shore cranes while executing a turn under pilotage during its arrival at Jebel Ali, UAE. It is not known yet what happened in Barcelona port but the two cases seem to have similarities as both collisions with shore cranes conducted during ships’ turning inside the port.

Namely, the outcome of MAIB investigation showed a list of interesting findings with respect to Bridge Resource Management. The container vessel in Jebel Ali was under pilotage. The pilot was on the bridge, with Master and the personnel assigned for duty under pilotage conditions as per Company’s SMS. Pilot maneuvered the vessel for berthing having two tugs standing by for assistance. During a maneuvering circle the vessel collided with two shore crabs causing the collapse of one.

Key Findings

Findings in brief showed the following:

  1. Vessel was going too fast for the intended maneuver when the pilot started the turn.
  2. Pilot was aware that the ship might have been travelling a little bit faster than he would have liked when he initiated the turn, but was content that the ship would be able to complete it.
  3. Ship’s bridge team was uncertain of the maximum speed required to complete the turn safely.
  4. There was no agreed plan for the intended maneuver, and therefore no shared mental model between the bridge team and the pilot.
  5. Pilot was operating in isolation without the support of the bridge team
  6. Pilot’s decision to turn at high speed was not effectively challenged because the ship’s bridge team lacked the necessary knowledge and experience to be able to confidently intervene and correct the pilot’s action.

Key considerations

The above case is a typical example of what is happening on board when a pilot embarks a vessel; albeit it should not be this way. Unluckily, there are Masters that without any control procedures “turn the conn” to the pilot or there are pilots that immediately after entering the wheelhouse start to give steering and engine orders without consulting the bridge personnel. Also, there are Masters that even leave bridge while the pilot is controlling the vessel. Concluding, the relation between Pilot and Master is the critical issue leading to single point failure in such cases.

However, legislation states a different basis for Master/Pilot relation. According to MAIB’s report, IMO Resolution A.960 mentions that:

2.1 The pilot’s presence on board does not relieve the master or officer in charge of the navigational watch from their duties and obligations for the safety of the ship. It is important that, upon boarding the ship and before pilotage commences, the pilot, master and other bridge personnel are aware of their respective roles in the safe passage of the ship.

2.2 The master, bridge officers and pilot share a responsibility for good communications and understanding of each other’s role for the safe conduct of the vessels in pilotage waters.

2.3 Masters and bridge officers have a duty to support the pilot and to ensure that his/her actions are monitored at all times.’

On the above, it would be necessary to add the ISM requirement for a safety management system to clearly state that the master has the overriding authority and the responsibility to make decisions with respect to safety and pollution prevention and to request the Company’s assistance as may be necessary.

Reviewing the identified causes that led to the accident, it is clear that none of the above legislative requirements was implemented successfully.

 

Best Practices

Safe navigation requires a close loop between decision and predefined procedures.  In particular, this loop has three stages prior reaching to a maneuver:

  1. The support stage during which all the available data is gathered (from all available sensors for positioning, steering, engine control and communications).
  2. The process stage during which the analysis of information based on experience and knowledge level of bridge team provide the appropriate tool for decision.
  3. The decision stage in which all members assigned with the responsibility of navigating / handling the vessel act as required by legislation providing the permission to the one “who has the con” during that specific time to make the right decision. During this stage, the one who has the conn takes the decision but the others act supportively and as control barriers based on their knowledge and experience.

BRM: Avoiding the Single Point of Failure

Predefined procedures include the exchange of information featuring Passage Plan analysis for responsible crew members, master/pilot exchange card and roles and responsibilities as discussed between all bridge team members (incl. the pilot). What is more, all personnel involved should be trained as required to become experienced and highly familiarized with vessel’s maneuvering and handling behavior.

 

BRM: Avoiding the Single Point of FailureBRM: Avoiding the Single Point of Failure
BRM: Avoiding the Single Point of FailureBRM: Avoiding the Single Point of Failure
Tags: communication onboardlessons learnedsafe navigationship bridge
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