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On 13 August 1941, she was transferred to Motor Torpedo Boat Squadron One (MTBRON 1) under the command of Lt. William C. Specht and assigned to Pearl Harbor. [1] [2] During the attack on Pearl Harbor, PT-20 was moored at berth S-13 awaiting loading on the replenishment oiler USS Ramapo (AO-12) for MTBRON 1's assignment to the Philippines. [3]
MTB 5006: Boat Construction Co., Falmouth: August 1945: To Royal Air Force in August 1945 as Long Range Rescue Craft LRRC 004. MTB 5007: S. B. Hall, Galmpton, Brixham: March 1945: Sold 17 November 1950. MTB 5008: William King, Burnham-on-Crouch: June 1945: Sold 20 July 1956. MTB 5009: Lady Bee, Shoreham-by-Sea, Sussex: 5 April 1945: Sold 17 ...
Harbor Freight Tools won a declassification of the class action; that is, the court found that all the individual situations were not similar enough to be judged as a single class, and that their claims would require an individual-by-individual inquiry, so the case could not be handled on a class basis.
Larger than earlier MTB or motor gun boat (MGB) designs, the Fairmile D was driven by four Packard 12-cylinder 1250 horsepower supercharged petrol engines and could achieve 29 knots (54 km/h; 33 mph) at full load. The boat carried 5,200 gallons of 100 octane fuel for a range, at maximum continuous speed, of 506 nautical miles.
During the Second World War the Royal Navy also sailed HMS Gay Viking and HMS Gay Corsair, a pair of motor gun boats. These were superficially similar to the later Gay -class, although their primary armament was a mixture of QF 6-pounder Hotchkiss , Oerlikon 20 mm cannon , and depth charges.
Initial armament was four torpedo tubes and two twin 12.7-millimetre (0.50 in) machine gun mounts, although the tubes were replaced by racks, and the gun armament was progressively upgraded as the war continued. Production batches were generally in multiples of 12 boats, as this was the size of a US Navy Motor Torpedo Boat Squadron (MTBRon).
The point machine (in this case an electric motor) and associated mechanism used to operate this switch can be seen to the right in the picture. A point machine (also known as a point motor, switch machine or switch motor) is a device for operating railway turnouts especially at a distance.
A compound DC motor connects the armature and fields windings in a shunt and a series combination to give it characteristics of both a shunt and a series DC motor. [5] This motor is used when both a high starting torque and good speed regulation is needed. The motor can be connected in two arrangements: cumulatively or differentially.