H18870
Photograph H18870 First World War, 1914-1918C.1918. AUSTRALIAN DESTROYERS, ONE TOWING AN OBSERVATION BALLOON, ON SUBMARINE PATROL IN THE ADRIATIC SEA. (PHOTO PURCHASED FROM C N KING, CANBERRA)

The Australian War Memorial Collection. Test site
HMAS "YARRA" WITH CAPTIVE BALLOON ON SUBMARINE IN THE ADRIATIC SEA. (PHOTO PURCHASED FROM C N KING, CANBERRA)
C.1918. AUSTRALIAN DESTROYERS, ONE TOWING AN OBSERVATION BALLOON, ON SUBMARINE PATROL IN THE ADRIATIC SEA. (PHOTO PURCHASED FROM C N KING, CANBERRA)

AVRO 504L CONVERSION OF HMAS "MELBOURNE", RABAUL, NEW GUINEA. (PHOTO PURCHASED FROM C N KING, CANBERRA)

ADRIATIC SEA, 1918-09-14. HMAS PARRAMATTA TOWING HER KITE OBSERVATION BALLOON, ON SUBMARINE PATROL. (DONOR: P.C. SLAUGHTER)

A PHOTOGRAPH OF A DESTROYER TAKEN AFTER THE OBSERVATION BALLOON (?FROM HMAS PARRAMATTA) HAS REPORTED A SUBMARINE IN SIGHT, IN THE ADRIATIC SEA, ON 1918-09-02. (DONATED BY MR. P.C. SLAUGHTER.)

HMAS Yarra with a kite balloon moored to her after deck, on patrol duty near the Strait of Otranto. Trained observers stood in a basket suspended from the balloon and searched for shadows that could

Observers prepare to go aloft with the observation balloon attached to the destroyer HMAS Yarra. The trained observers looked for shadows that could indicate the presence of submarines; any submarine
