by Mr Link » October 20, 2021, 6:17 am
They are Macgregor brand hatch covers. They make about 10 different types of hatch covers, but I believe these are stacking covers. They stack on top of each other, either in pairs for each hatch (ie piggyback covers), or perhaps in a larger stack of up to about 6 covers (stacking covers). They are also strong enough that cargo can be carried on top of the hatch covers.
I assume folding covers were not used since they would interfere with the unloading boom.
Here is a video showing general types of hatch covers currently used on ocean going ships, including piggyback and stacking (at 8:50 timestamp).
https://www.youtube.com/watch?v=o6ZY6ym3zz0
And here is a 2020 video of the Mark W Barker with seven of the 10 covers installed on the partially- built hull:
https://www.youtube.com/watch?v=K8ENSyf2Ys8
They are Macgregor brand hatch covers. They make about 10 different types of hatch covers, but I believe these are stacking covers. They stack on top of each other, either in pairs for each hatch (ie piggyback covers), or perhaps in a larger stack of up to about 6 covers (stacking covers). They are also strong enough that cargo can be carried on top of the hatch covers.
I assume folding covers were not used since they would interfere with the unloading boom.
Here is a video showing general types of hatch covers currently used on ocean going ships, including piggyback and stacking (at 8:50 timestamp). [u] [url]https://www.youtube.com/watch?v=o6ZY6ym3zz0[/url]
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And here is a 2020 video of the Mark W Barker with seven of the 10 covers installed on the partially- built hull: [u][url]https://www.youtube.com/watch?v=K8ENSyf2Ys8[/url][/u]