Mississagi hatch combings

[Brent]

They were raised to help make up for loss of capacity taken up by the self unloading system. Note that the USS AAA have a raised trunk that was added when they were converted.

[Guest]

They were raised when she was converted to a self-unloader to help her cube out when carrying coal.

[rocky]

Saw the Mississagi today at Port Huron and noticed the first five hatch combings are twice the height of the rest. Any reason why that is?