Below is copy from wartime report with an apparently sole reference to OHIO, from:
The Sinking of HMAS Sydney
A Guide to Commonwealth Government Records.
MERCHANT VESSEL MOVEMENT CARDS, ALPHABETICAL BY SHIP NAME, 1939–1946 B6256
Recorded by: 1939–1954 Navy Office, Department of the Navy (CA 38)
Quantity: 8.8 metres Location: NHS
These cards record the movements of merchant shipping in Australian waters during World War II. The cards are double sided, and the information recorded for each vessel includes the following: Name, owners, agents or charterers, type of vessel, port of registry, date built, net tonnage, gross tonnage, fuel, service speed, maximum sustained speed, one day’s run at service speed, armaments fitted, stiffened for, recognition, usual employment. The movement information recorded includes: port, message numbers, arrival and departure dates, and remarks. The cards are arranged alphabetically, by ship’s name.
One or more cards is held for each of the vessels which was in some way involved in the last voyage of, or search for the Sydney – ie Zealandia, Aquitania, Centaur, Trocas, Koolinda, Hermion, Pan Europe, Saidja, Herstein, Sunetta, Zaanland, Evagoras, Nordnes, Ohio, Cape Otway and Islander.
I also found reference in NAA files to Gunnar Selliseth M/T OHIO arriving Melbourne 24 December1941 and info'd INGRID FISHER(SELLISETH) and Ron Berg-Iverson re "Infomation on my father". I also found mention of Magne Solheim, M/T OHIO, arriving Melbourne 15 May 1941.
Best regards ,