Manoeuvrability of Seaway ll. (Julian Joy Report)

Manoeuvrability of Seaway ll.  (Julian Joy Report)

It is necessary for me to discuss the manoeuvrability of Seaway ll in my investigation because Mr Young’s evidence referred to the inability of Seaway to easily control its course & speed. He said in his Brief of Evidence “…large, heavy vessels like Seaway can be difficult & slow to turn or stop in an emergency. It is particularly important that smaller vessels, which are obliged under Part 22.15 to keep out of the way, should give larger vessels a wide berth”

With 4 engines & propeller control points & joystick control, Seaway is dramatically more manoeuvrable than Classique. The high manoeuvrability is confirmed by other operators of Seaway & is required for her type of operation in the Tamiki River & extremely restricted areas she operates in, requiring good handling ability & skill on the part of the operator – she is one of the most manoeuvrable vessels on the harbour. This is a fundamental error of understanding of the vessel’s capability by Mr Young.

In addition, there is nothing in Part 22.15 that requires a smaller vessel to give a larger vessel a wide berth. In practice, ‘relative manoeuvrability’ is a more significant parameter throughout all of the collision rules.

In the photograph taken by me (J Joy) on 14th April 2011 showing the starboard hull of Seaway ll, the airspace under the deck can just be seen; Seaway is a catamaran, a 2 hulled ship, not a “heavy flat-bottomed vessel” as Mr Young stated in his Brief of Evidence.


The following photograph shows the layout of equipment around the steering & engine control position on Seaway ll.

The photo taken by me 14 April 2011, sitting in Seaway’s conning position, looking dead ahead.


The principle controls are all within arm’s reach.

I note that the photo 5 in MNZ Photograph Book March 2009 , appears not to be taken from the actual helm position as stated but from a position standing more than a metre to port from that position, behind the engine monitoring displays. The actual helm position controls do not appear in the MNZ photo. This does not materially affect the investigation but illustrates in my opinion the lack of care taken by MNZ in this matter which they held to be serious.

Another photo taken by me 14 April  shows the view from a position standing in between the helm postion & the position used in photo 5 of the MNZ Book.


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