Liberty Replacement - Freedom Vessel:
The Freedom vessel was a Japanese-built Liberty-replacement type. As can be seen, these are both unsophisticated ships with one ’tween or shelter deck. They are both very similar in size, though somewhat larger and faster than the original Liberty ship they replaced. Since the advent of container vessels, general-cargo vessels are often referred to as break-bulk vessels, as the cargo is loaded into and broken out of their holds piece by piece.
Modern designs for break-bulk vessels have changed little from the Liberty replacement types, though some of the tonnage used in the liner trades has taken the name of MPP- multi-purpose carrier. MPP- multi-purpose carrier may have one or more tween decks, large open hatchways and probably a heavy-lift derrick.
The Freedom vessel's heavy-lift derrick in the centre of the ship is known as a Stülken derrick, one of the most popular of the patent shipboard devices for handling heavy lifts. Break-bulk vessels had around 7% of the carrying capacity but that over the last 20 years its total capacity has been falling.
Dry Bulk Shipping News - Shipbroker Notes