Modified T Class Submarines and
third of this Class ordered from HM Dockyard, Chatham with HM
Submarine TRENCHANT on 25th August 1941 and laid down on 11th
February 1942. This submarine was launched on 11th December 1942 as
but was renamed TRADEWIND in March 1943 before build
completion on 18th October 1943. Acceptance Trials were carried out
in the Clyde after the ship had been commissioned for service. This
boat had a minelaying capability.
B a t t
l e H o n o u
field Blue, a cherub
M o t t
semper secundis: 'With winds ever
S u m m
a r y o f W a r S e r v i c e
1 9 4
Completed contractors sea trials and commissioned for
On completion of Acceptance Trials took passage to
Worked-up for operational service with 3rd Submarine Flotilla based
in Holy Loch.
1 9 4
On completion of work-up deployed for Flotilla duties in NW
Deployed for escort of HM Submarine STUBBORN which had been damaged
charges whilst attacking convoy off Norwegian coast.
Nominated for service in Eastern Fleet with 4th Submarine
Passage to Ceylon
Joined Flotilla at Trincomalee
Deployed for interception patrols in Indian
Commanding Officer, Lieut Maydon RN.
out unsuccessful attack on coaster under
out gun attack on same coaster and a minelayer sinking both ships
taking 14 prisoners
16th Sank two barges off
18th Sank mercantile JUNYO
MARU of 5,065 tons
Flotilla duties based at Trincomalee
30th Laid mines in Mergui
(Note: A 593 ton ship was sunk in this minefield on 1st
Later in patrol sank a coaster and a junk off coast of Burma with
damage to two other
junks and a coaster, all by surface gun attacks..
22nd Transferred to British
Pacific Fleet on formation
Trincomalee deployment with British Pacific Fleet in
1 9 4
Trincomalee deployment in continuation.
Deployed for patrol in Malacca Strait and Bay of
11th Sank mercantile
NANSHIN MARU of 834 tons.
Passage to join other British submarines based at
(Note: BPF submarines were later transferred to Subic Bay and
HM Depot Ship MAIDSTONE.)
Deployed for interception patrol in South China
29th Sank mercantile
TAKASAGO MARU of 1,116 tons, a tug and two junks in Gulf of
Interception patrol duties with Flotilla in
Nominated for return to UK
(Note: In view of the extensive need for operational submarines in
the BPF it may be
assumed that this return was due to repair requirements not
available on station.
To be confirmed)
Passage to Chatham for refit.
Paid-off on arrival and taken in hand for refit by HM
P o s
t W a r N o t e
TRADEWIND recommissioned on completion of
refit in 1946 and was based at Portland.
selected for modernisation and Paid-off.
Work done included fit of ‘Snort’ Mast and the submarine
re-commissioned for trials before being
deployed for Flotilla duties in Home waters. She Paid-off into Reserve in 1954 and was laid-up at
Portsmouth. Sold to BISCO for demolition by Shipbuilding Industries
in 1954 she arrived in tow at the breaker’s yard in Charlestown,
Rosyth on 14th December that year