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Precis File
SHIP NAME: Har Addir KEY: NUM. ENTRIES: 2
source SN, Chadburn
type A
volume
material
dead 0
link

Har Addir, OBO ( built 1968) 75,000Tns. Whilst in full Ballast condition (2&8 holds flooded) suffered a structural failure between 8 hold and the Grain Tank on the Port side, the failure also ripped open the Cofferdam between 8&7 hold as well as ripping open the area containing the Duct Keel which immediately flooded Knocking out all of the electrics in that area including the solenoids on the Martonair Valves which operated both the Ballast and Bilge suction valves. After she came back off her beam end by the Ballast water settling in No7 Hold it was found that the only way that she could be pumped out was through a manually operated bilge suction valve in the fore peak and by cracking the Duct keel access hatch open to allow the water from the Duct keel to flow through it, all other valves were useless until the water level was down far enough to open the Cofferdam doors and the access doors to the ballast valves to put the valves in an open position manually( by diving down to them) when required in order to get the vessel lightened enough to go over the sill and in the Dry Dock. The only manually operated valves From the deck on this vessel were the previously mentioned forward bilge valve and the saddle tank dump valves. Automation at its best!!


source CTX
type D
volume
material
dead 0
link

We cant blame corrosion on this one. Ship was not only brand new, she was on sea trials, ballasted down to her marks. Weather for sea trials has to be very good. 8 was ballasted for trials, 7 was not. Chadburn was the ships 4th Engineer at the time.