CTX had divided this saga into two casualties.
The first is this structural failure.
The second casualty is a steering failure on the 22nd
when she was forced to leave Bantry Bay
after losing an anchor.
The structural failure was bad cracking on the deck
just forward of the accomodation near the foward pump room bulkhead.
This bulkhead was at Frame 65.
The longitudinal bulkhead was discontinuous at this bulkhead.
This is extremely poor practice that should be illegal.
but under Class rules is not.
The longitudinal bulkhead stress is transmitted thru
the transverse bulkhead in a direction
in which the plate's mechanical properties are much weaker
that when the stresses are in the plane of the plate.
It also allows misalignment between the forward and aft portions,
which would generate very high shear stress in the transverse bulkhead.
This misalignment actually was found in other ships of this class.
The working of the transverse bulkhead
in turn would lead to cracking on deck.
This class of ship had a bad history of such cracking (see Tyne Bridge, 1982).
The Derbyshire herself had to repair a fracture iwo Frame 65 in Nov 1977.
And in fact the Kowloon Bridge had repaired deck cracks
on at least three occaisions (we can be confident there were more).
They had also installed additional stiffeners on deck
to attempt to fix the problem.
On 18 November in heavy weather (a nearby ship called it Force 8/9),
the crew heard
gun shot sounds on the deck near Frame 65.
The ship was able to make it to Bantry Bay
where the failure was inspected by a DOT surveyor,
and presumably by Class (LR).
But CTX has not been able to located either the DOT or Class report.
Lloyds Register later called this a brittle failure,
which is consistent with the gun shot sounds.
But we need the inspection reports.
(Woinin indicates the surveyor was a J. L. Noble.)
Apparently, they had affected some repairs
when she was forced to sail out on the 22nd.
This ship was originally the English Bridge, then Worcestershire,
then Sunshine, then Murcurio, then Crystal Transporter,
then Kowloon Bridge.