Changes

On 21 February, the MTBs escorted transports for the invasion of the Russell Islands, with PT-109 personally delivering Col. E. J. Farrel and his staff to the beach in Renard Sound. After the transports landed the remaining Marine and Army troops, the PTs began nightly offshore security patrols to protect the beach head. Additional patrols covered the familiar channels off Savo Island in case the Japanese returned to the Solomons. These operations became more difficult on 5 March, when a single plane dropped four bombs on Senapi, destroying the operations office and riddling the hull of PT-118. Then, on 7 April, the last major Japanese air strike in the Solomons managed to sink three Allied ships in Tulagi harbor and damage two others, temporarily disrupting MTB base operations.

On 21 February, the MTBs escorted transports for the invasion of the Russell Islands, with PT-109 personally delivering Col. E. J. Farrel and his staff to the beach in Renard Sound. After the transports landed the remaining Marine and Army troops, the PTs began nightly offshore security patrols to protect the beach head. Additional patrols covered the familiar channels off Savo Island in case the Japanese returned to the Solomons. These operations became more difficult on 5 March, when a single plane dropped four bombs on Senapi, destroying the operations office and riddling the hull of PT-118. Then, on 7 April, the last major Japanese air strike in the Solomons managed to sink three Allied ships in Tulagi harbor and damage two others, temporarily disrupting MTB base operations.

In between regular security patrols, PT-109 underwent several short maintenance periods, which included the installation of a surface search radar set. As radar sets were not issued with this class of PT-boats, the device was undoubtedly a "scrounged" item and it is unclear how long it lasted. Ensign Larson left the boat on 20 April 1943 and Ensign Leonard J. Thom, USNR, the executive officer, took charge until relieved by Lieutenant (jg) John Fitzgerald Kennedy, USNR, on the 24th. Starting in late April, the motor torpedo boat increasingly conducted patrols in the Russell Islands area and on 16 June, PT-109 shifted with other boats to a "bush" berth on Rendova Island in support of these forward operations.

In between regular security patrols, PT-109 underwent several short maintenance periods, which included the installation of a surface search radar set. As radar sets were not issued with this class of PT-boats, the device was undoubtedly a "scrounged" item and it is unclear how long it lasted. Ensign Larson left the boat on 20 April 1943 and Ensign Leonard J. Thom, USNR, the executive officer, took charge until relieved by Lieutenant (jg) John Fitzgerald Kennedy, USNR, on the 24th. Starting in late April, the motor torpedo boat increasingly conducted patrols in the Russell Islands area and on 16 June, PT-109 shifted with other boats to a "bush" berth on Rendova Island in support of these forward operations.

On 1 August, an air strike by 18 Japanese bombers struck this temporary base, wrecking PT-117 and sinking PT-164. Two torpedoes were blown off the latter boat and ran erratically around the bay until they fetched upon [ran ashore on] the beach without exploding. Intelligence reports indicated five enemy destroyers were scheduled to run that night from Bougainville Island through Blackett Strait to Vila, on the southern tip of Kolombangara Island. Despite the loss of two boats, the flotilla sent out fifteen motor torpedo boats out in four sections to meet the Japanese destroyers.

On 1 August, an air strike by 18 Japanese bombers struck this temporary base, wrecking PT-117 and sinking PT-164. Two torpedoes were blown off the latter boat and ran erratically around the bay until they ran ashore on the beach without exploding. Intelligence reports indicated five enemy destroyers were scheduled to run that night from Bougainville Island through Blackett Strait to Vila, on the southern tip of Kolombangara Island. Despite the loss of two boats, the flotilla sent out fifteen motor torpedo boats out in four divisions to meet the Japanese destroyers.

Lieutenant Brantingham in PT-159 made radar contact at midnight with ships approaching from the north, close to Kolombangara. Soon after this he sighted what he believed to be large landing craft and closed range for a strafing run only to run into heavy shellfire that revealed the "landing craft" to be destroyers. He got off four torpedoes, and PT-157 launched two as well, before the two boats withdrew.

Lieutenant Brantingham in PT-159 made radar contact at midnight with ships approaching from the north, close to Kolombangara. Soon after this he sighted what he believed to be large landing craft and closed range for a strafing run only to run into heavy shellfire that revealed the "landing craft" to be destroyers. He got off four torpedoes, and PT-157 launched two as well, before the two boats withdrew.

Lieutenant Kennedy in PT-109 patrolled without incident until gunfire and searchlights were seen in the direction of the southern shore of Kolombangara. The location was undetermined, however, and the boat rendezvoused with PT-162 to determine the source of firing. PT-109 then intercepted a terse radio message [probably from PT-159] "I am being chased through Ferguson Passage! Have fired fish." At this time, PT-169 came alongside and reported an engine out of order. She lay to with PT-109 and PT-162 to await developments while instructions were requested from base. Orders were received to resume normal patrol station, and PT-162 being uncertain as to its position, requested Lieutenant Kennedy to lead the way back to patrol station.

Lieutenant Kennedy in PT-109 patrolled without incident until gunfire and searchlights were seen in the direction of the southern shore of Kolombangara. The location was undetermined, however, and the boat rendezvoused with PT-162 to determine the source of firing. PT-109 then intercepted a terse radio message [probably from PT-159] "I am being chased through Ferguson Passage! Have fired fish." At this time, PT-169 came alongside and reported an engine out of order. She lay to with PT-109 and PT-162 to await developments while instructions were requested from base. Orders were received to resume normal patrol station, and PT-162 being uncertain as to its position, requested Lieutenant Kennedy to lead the way back to patrol station. None of the three boats had radar.<ref>Donovan (2001) pp. 95-99</ref>

==Loss of PT-109==

==Loss of PT-109==