Two contacts for Hong Kong which may be able to give you some help.
Merchant Navy Officers Guild Hong Kong, tel(852)2545 8269
email
mail@mnoghk.org.
The guild was formed in HK just after the war and is still going strong.
Most Officers and Engineers working for HK shipping companies would have been members.
The other contact is the Mariners Club operated by the Mission to Seaman, which has residential facilities.
I stayed there in 1968
Contact tel (852)2368 8261, email
Stephen@themarinersclubhk.org. Stephen is the Anglican padre.
Hope this helps in your search.