Cryptologic Bytes

2 August 1943: Australian Coastwatchers sent coded message noting sinking of John F. Kennedy's PT-109.

From Wikipedia:

The explosion on 2 August was spotted by an Australian coastwatcher, Sub-lieutenant Arthur Reginald Evans, who manned a secret observation post at the top of the Mount Veve volcano on Kolombangara, where more than 10,000 Japanese troops were garrisoned below on the southeast portion. The Navy and its squadron of PT boats held a memorial service for the crew of PT-109 after reports were made of the large explosion.

However, Evans dispatched islanders Biuku Gasa and Eroni Kumana in a dugout canoe to look for possible survivors after decoding news that the explosion he had witnessed was probably from the lost PT-109. They could avoid detection by Japanese ships and aircraft and, if spotted, would probably be taken for native fishermen.

Kennedy and his men survived for six days on coconuts before they were found by the scouts. Gasa and Kumana disobeyed an order by stopping by Naru to investigate a Japanese wreck, from which they salvaged fuel and food. They first fled by canoe from Kennedy, who to them was simply a shouting stranger. On the next island, they pointed their Tommy guns at the rest of the crew since the only light-skinned people they expected to find were Japanese and they were not familiar with either the language or the people.

Gasa later said "All white people looked the same to me." Kennedy convinced them they were on the same side. The small canoe was not big enough for passengers. Though the Donovan book and movie depict Kennedy offering a coconut inscribed with a message, according to a National Geographic interview, it was Gasa who suggested it and Kumana who climbed a coconut tree to pick one. Kennedy cut the following message on a coconut:

NAURO ISL
COMMANDER... NATIVE KNOWS POS'IT...
HE CAN PILOT... 11 ALIVE
NEED SMALL BOAT... KENNEDY

Kennedy told Gasa and Kumana, "If Japan man comes, scratch out the message."

The message was delivered at great risk through 35 nmi (65 km) of hostile waters patrolled by the Japanese to the nearest Allied base at Rendova. Other coastwatcher natives who were caught had been tortured and killed. Later, a canoe returned for Kennedy, taking him to the coastwatcher to coordinate the rescue. PT-157, commanded by Lieutenant William Liebenow, was able to pick up the survivors.

The arranged signal was four shots, but since Kennedy only had three bullets in his pistol, Evans gave him a Japanese rifle for the fourth signal shot. The sailors sang "Yes Jesus Loves Me" to pass the time. Gasa and Kumana received little notice or credit in military reports, books, or movies until 2002 when they were interviewed by National Geographic shortly before Gasa's death.

In a more recent visit to the area, writer/photographer Jad Davenport managed to track down the then-90-year-old Eroni Kumana, and together they made a visit to view Kennedy Island. In typical fashion for the time, Kumana reports that the first thing the survivors asked for was cigarettes. When they realized they had no matches, Kumana surprised and delighted the men by making a fire by rubbing two sticks together.

The coconut shell came into the possession of Ernest W. Gibson, Jr. who was serving in the South Pacific with the 43rd Infantry Division.[20] Gibson later returned it to Kennedy.[21] Kennedy preserved it in a glass paperweight on his Oval Office desk during his presidency. It is now on display at the John F. Kennedy Library in Boston, Massachusetts.

Kennedy's coconut message was not the only message given to the coastwatchers. A more detailed message was written by the executive officer of PT-109, Leonard Jay Thom. Thom's message was a "penciled note" written on paper. Kennedy's message was written on a more hidden location in case the native coastwatchers were stopped and searched by the Japanese.

Thom's message read:

To: Commanding Officer--Oak O
From:Crew P.T. 109 (Oak 14)
Subject: Rescue of 11(eleven) men lost since Sunday, August 1 in enemy action. Native knows our position & will bring P.T. Boat back to small islands of Ferguson Passage off NURU IS. A small boat (outboard or oars) is needed to take men off as some are seriously burned.
Signal at night three dashes (- - -) Password--Roger---Answer---Wilco If attempted at day time--advise air coverage or a PBY could set down. Please work out a suitable plan & act immediately Help is urgent & in sore need. Rely on native boys to any extent
Thom
Ens. U.S.N.R
Exec. 109.[23]

Thom and Kennedy were both awarded the Navy and Marine Corps Medal.

Read about the sinking of PT-109 in the Smithsonian Magazine article: "Remembering PT-109" via the link below. And learn more about JFK via the National Park Service site - link below.