My name is Greg Hayden and I live in Vista, California, about forty miles north of San Diego airport and six miles East of the Left Coast surf. I have read this whole thread and would like to attach some T2 pictures I took, but gee I cannot see how? I have never seen this interface. I am a frequent contributor to shipsnostalgia.com and used to their interface.
I sailed a half dozen or so T2's, and regarding stack deck aft cabins, none were exactly the same. At least by the time I got there. I sailed my first T2, the Leon Falk Jr ex-Cities Service Oil Company Winter Hill in 1961 and continued to sail them off and on until about 1973. I began my 16 year sailing career on the Great Lakes in 1960, went offshore in 1966 and swallowed an anchor in 1975.
One thing I will mention now, that forward deep tank is a 6,000 bbl fuel oil tank. There were three duplex steam recip fuel oil transfer pumps in the forward pump room. They were used ONLY to transfer fuel aft. Two were larger and alike and considered transfer pumps and one smaller considered a stripping pump. When transferring fuel aft, especially in the tropics, that forward pump room became a steam bath.
T2's had two 3,000 bbl fuel tanks aft. Those ullage trunks immediately forward of the aft house are atop the forward end of these two fuel oil tanks. T2's did NOT run tank vents up masts. Tank ships in general did not do this. Fuel oil tank vents that run up the masts are on cargo ships. They vented each relatively small double bottom tanks. If you wanted to vent T2 cargo tanks up a mast you would need 72 inch diameter pipe for each tank.
When loading or discharging cargo the ullage truck lids were cranked open at about a 45 degree angle. They could be opened nearly 90 degrees but that was not necessary. One of the pictures I have is of the pumpman and bosn Butterworthing tanks on the Pecos TAO-65. It clearly shows a close up of the ullage trunk and the tanks real pressure/vaccum vent piped to the side of the ullage trunk. It also clearly shows the reach rod pedestals for valves in the cargo tanks. These valves did NOT have real long stems. Instead they were reach rods with swivel joints. The deck pedestals are actually the top of a gate valve. In the tanks the reach rods fit where the hand wheel would be.
Oh there is lots more but I will stop now and go look see if I can find info on how to include images.
Greg Hayden