Establishing The Headings Of Seaway – Julian Joy Report

In the 1st Photo, Seaway is heading just slightly to the right of Sentinel building in Takapuna.

Establishing The Headings Of Seaway – Julian Joy Report
Link for Seeing, Signing & Sharing Petition – http://maritimenz.com/AnnulConvictionGainedByAbuseOfCourtProcess
In establishing whether risk of collision exists, the important features are the relative compass bearings of the 2 vessels in relation to each other & the distances apart.
For collision to exist, the relative compass bearings must remain constant & the distance must be decreasing. ‘Similar triangles’ is the geometry behind this process. Both of these criteria must exist. ie. if the elative compass bearing is changing, no risk of collision exists. If distance is not decreasing, no risk of collision exists.
To establish relative compass bearings I first needed to establish the actual headings of Seaway using the photos & the positions established from them & from that I am able to establish the relative & compass bearing of Classique from Seaway at the time of each photo. It is not possible to so easily measure the relative bearings of Seaway from Classique but I have made estimates, using her course of 080*T
The following photos are those taken by Seaway enlarged & cropped to remove all but the band of horizon ahead of Seaway.
The lines drawn from the vessel are the heading point at the time of the photo. 4 lines are drawn where possible to establish accuracy.
1. Aligning the white structure
2. Aligning the hull deck structure
3. Aligning the edge of the ramp
4. Aligning the yellow painted line on the ramp.

Lines 1, 2 & 3 give a very good accuracy as they meet at a point in the distant perspective. Line 4 is at a slightly different alignment because the ramp is not horizontal, its reliability is therefore very much reduced due to this angle & I have not used it for that reason. It is shown only here because it is the line that Mr Young used.
In the 1st Photo, Seaway is heading just slightly to the right of Sentinel building in Takapuna.
Link for Seeing, Signing & Sharing Petition – http://maritimenz.com/AnnulConvictionGainedByAbuseOfCourtProcess

In the 1st Photo, Seaway is heading just slightly to the right of Sentinel building in Takapuna.
Establishing The Headings Of Seaway – Julian Joy Report,Top
Establishing The Headings Of Seaway – Julian Joy Report,bottom

 

Establishing The Headings Of Seaway – Julian Joy Report

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