I replaced one of my 24 inch hatches with a Man Ship and I'm quite happy with the quality. My admiral prefers the ease of operation of the original Atkins and Hoyle hatches; with a spring in the hinge and two simple latches
, it's a simple matter to open it and adjust its position. The ManShip is heavier, has no springs, has 6 latches, and has a turn-to-lock stop on each of the arms that lock it in various degrees of open, all combining to require more muscle and attention to operate. Occasionally, the admiral winds up with the hatch
falling onto her head
. I think they now offer gas struts and these may make it more user friendly.
I'd prefer the Atkins and Hoyle hatches but they're so pricey.