Container Ship Collision In Pakistan

KARACHI: Traffic at the South Asia Port Terminal Limited (SAPT) was suspended after two ships reportedly collided at the Karachi port here on Monday.

According to information obtained from sources, a collision of Hapeg-Lloyd's ship Tolten with Hamburg Bay resulted in the offboarding of at least 21 containers.

The administration of the deep port, however, managed to avert possible damage to the cranes installed at the berth through a timely operation.

Operations at the SAPT, which were suspended after the accident, will resume after the containers are removed from the sea through a special operation by the Karachi Port Trust
C-notesays...

Which ever dive team working that site can take the rest of the year off after they finish. Those billable hours ain't cheap.

fuzzyundiessays...

As a tall ship sailor, I'm horrified by events like this. I personally know a sailor whose ship sank at 2am in the Bay of Biscay, apparently holed by a partially submerged container. They're the modern-day version of icebergs except much harder to spot and they can occur ANYWHERE.

lv_huntersays...

"This accident looks... contained"
(•_•)
( •_•)>⌐■-■
(⌐■_■)

YEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAaaaaaaaaaaaaa

Fairbssays...

are they like those logs that float vertically in lakes?

fuzzyundiessaid:

As a tall ship sailor, I'm horrified by events like this. I personally know a sailor whose ship sank at 2am in the Bay of Biscay, apparently holed by a partially submerged container. They're the modern-day version of icebergs except much harder to spot and they can occur ANYWHERE.

fuzzyundiessays...

Can be! It depends on the contents of the container and how air-tight its construction and materials are. Generally materials packed for transport are supposed to be strapped or otherwise held in place so that they don't shift and upset the transport vehicle (see the 747 that crashed in the Middle East when its cargo shifted...). But that's just the stuff that was meant to be in the container. Every ship has to contend with the risk of water ingress. Un-contained water in a vessel forms a "free surface" and the so-called free surface effect applies. That's where that material can and will move based on gravity, often making a bad situation much much worse. Imagine water in a tank (itself a free surface) vs. water sloshing around the cabin of a plane. This is what usually causes ships to capsize: water gets in and isn't contained, so it can move tremendous amounts of mass anywhere it wants to go -- usually in the direction it's already going. Calculations of ship stability for things like cargo loading and ballast assume minimal free surface in the ship, because you have to. That's how ships stay upright and afloat.

How does this apply to lost containers? Depending on how watertight the container is and how well strapped in the contents are, some amount of water may get in and form a free surface. This free surface will move around until the container finds its equilibrium which may or may not be watertight and less dense than the water around it, which defines whether it floats or sinks and what direction it faces when it does.

A container with a lot of weight on one side but otherwise watertight will stand upright and perhaps still sink (like the one at the end of this video). A container with well-distributed weight would tend to end up flat. Whether it sinks or not depends on whether it's watertight and what its density is -- the weight of the container displacing ocean vs. the weight of the ocean it displaces.

Sadly, a significant number of containers end up at the worst possible density/displacement where they float just at or near the surface and lay in wait to devastate passing ships, regardless of the orientation of the container itself.

mxxconsays...

Common, it's Pakistan. You can buy half an army for $2.43

C-notesaid:

Which ever dive team working that site can take the rest of the year off after they finish. Those billable hours ain't cheap.

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