Ex-USN 

(SS) submarine
This was not a homogenous class of subs, but they are grouped together in the interest of saving space. In order to provide some ASW training for the west coast navy, the former USS BURRFISH, a GATO/BALAO class submarine, was borrowed from the USN and renamed HMCS GRILSE. She was later replaced by another borrowed USN submarine, the former USS ARGONAUT, a TENCH class boat which had undergone the Fleet Snorkel conversion (pictured above).

Ex-USN submarine
Characteristics:

GRILSE:

Displacement: 1,526 (surfaced), 2,391 (submerged) tons full load 
Dimensions: 95.10 x 8.23 x 5.18 meters (312 x 27 x 17 feet) 
Propulsion: Diesel-electric, 4 diesels, 2 shafts, 5,400/2740 shp, 20.25/8.75 knots 
Crew: 79 
Radar:
Sonar:
Fire Control:
EW: none 
Armament: 10 21" TT 

RAINBOW:

Displacement: 1,570 (surfaced), 2,414 (submerged) tons full load 
Dimensions: 95.10 x 8.23 x 5.18 meters (312 x 27 x 17 feet) 
Propulsion: Diesel-electric, 4 diesels, 2 shafts, 5,400/2740 shp, 20.25/8.75 knots 
Crew: 82 
Radar:
Sonar:
Fire Control:
EW: none 
Armament: 10 21" TT 

Ships:
 
Name
Pendant
Commissioned
Paid Off
GRILSE (Ex-BURRFISH)
71
11/5/61
2/10/69
RAINBOW (Ex-ARGONAUT)
75
2/12/68
21/12/74

Photos:

 (click on thumbnail for bigger image) 
RAINBOW (left) and GRILSE (right) rafted together at a wharf, with a DDE in the background. DND photo, Courtesy of Dave Shirlaw. 
RAINBOW appears much more streamlined here that she would have before undergoing the Fleet Snorkel conversion. DND photo, Courtesy of Dave Shirlaw. 
 

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