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Andy

Kerry - Minor Spillage in Santander

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My money is on dirty ballast water which is usually tested before discharge. Fines are up to £25k. It's very rare nowadays that ships discharge engine waste.

 

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On 30/12/2019 at 08:46, jonno said:

My money is on dirty ballast water which is usually tested before discharge. Fines are up to £25k. It's very rare nowadays that ships discharge engine waste.

 

You mean Bilge Water? Ballast water isn't normally tested and doesn't need to go through an OWS as it's just ballast and shouldn't have gone near anything oily.  Hence why the Ballast Water Convention is more interested in invasive species than oil pollution.

There have been instances where ballast tanks have become contaminated with fuel oil because the ballast and heated fuel tanks are right next to each other and hot fuel on one side of the bulkhead and cold ballast water on the other doesn't do wonders to said bulkhead over time. But that's a design and inspection issue.

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I thought ballast tanks were filled and emptied  as necessary with sea water depending upon the load to ensure that the ship sailed at the same level whatever the loading.

 

 

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I thought ballast tanks were filled and emptied  as necessary with sea water depending upon the load to ensure that the ship sailed at the same level whatever the loading.

Indeed, but a container ship might take on ballast in China including various wriggly critturs which are then discharged at Rotterdam or Felixstowe whereupon they gobble up the native life, proliferate and take over the world - well our part of it anyway.

In ye olden days Oceans protected us from such cross contamination but now they facilitate it.

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2 hours ago, Timmy said:

You mean Bilge Water? Ballast water isn't normally tested and doesn't need to go through an OWS as it's just ballast and shouldn't have gone near anything oily.  Hence why the Ballast Water Convention is more interested in invasive species than oil pollution.

There have been instances where ballast tanks have become contaminated with fuel oil because the ballast and heated fuel tanks are right next to each other and hot fuel on one side of the bulkhead and cold ballast water on the other doesn't do wonders to said bulkhead over time. But that's a design and inspection issue.

No I meant the ballast water in ferries as they don't tend to be built with SBT's but rather CBT's which more often than not have oil filled & black water waste pipes running in close proximity. If any of those spring a leak then the ballast water is contaminated. The rules are very strict, even the slightest discolouration of the surrounding seawater in port is prohibited.  As you've mentioned it's not passed through a separator so until it reaches open water there's no chance of knowing if it's clean or not. 

Many ships which fall foul to this fill their tanks with already contaminated water whilst on the berth then discharge it totally unaware of any rule breach. You've probably seen for yourself the amount of fuel or oil deposits which form on berth pilings and around linkspans, the rainbow coloured oily sheen is a dead giveaway.

Most if not all European ports don't have a ballast exchange plan as the MARPOL ruling is only enforced in parts of Australasia.

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