Photo shows it all. Way back American Export and Farrell loaded deep tanks often. West Africa used to see the Firestone ships, Harbel Tapper & Harbel Cutlass, both fitted for liquid latex in deep tanks.
These days never see a break bulk ship & it’s rare for a handy sized bulker to have cargo deep tanks. Container ships and Con Ro’s never. Lot of the small volume liquid bulk has gone to tank containers. And smaller parcel tankers that are more common than the old days.
Here’s a obscure detail. Had some big disputes with the specialist stevedore that delivered tallow alongside in rail cars & pumped aboard. Pier would be a slippery mess & dangerous for passengers (American Ex & Farrell 12 passengers ) as well as longshoremen. Accident it’s the vessel that gets sued