Nice Find!
William Henry Field Coombs was a Royal Navy Signalman from Bristol so not the man we are looking for. However your other find (which I have now found) is likely contender Although his name is the wrong way round. His age and place of birth are in order and must be worth a follow up
Name:COOMBS, Frederick W
Date of death:18 March 1911
Age:34
Place of death:Fifeness
Place of birth:Bridport
Ship's name:Hannah
TNA piece BT334/49
Problem is which HANNAH!
There were several ships around with that name in 1911. I think this is the one.
HANNAH official number 29411 built at Par in 1865 registered in Llanelli.
I know she was wrecked in March 1911 but cannot give a specific date. However she was removed from the British register in 1911 and her registration papers are at Kew in BT110/322/12 This should tell you exactly when she was lost. Unfortunately her crew agreements for 1911 are lost or destroyed.
I cannot find any vessels lost off Sulawesi Tengah, Indonesia in 1911 but he could have died from an accident or illness. However I can find no reference to anyone of that name other than the above.