A Brief History of USS Blenny
USS Blenny was built at the North Yard of Electric Boat Co., in Groton, CT, and commissioned in July of 1944.  As a Balao class, she featured a reduced silhouette conning tower, and a high tensile 7/8 inch thick steel hull.  The latter was an improvement over the preceding Gato class (9/16 mild steel hull), and increased the test depth from the Gato 300 feet to 400 feet, with a generous margin of safety.  Many Balao submarines went to far greater depths (600 feet or greater) to escape Japanese depth charges.  Blenny made 4 wartime patrols, and sank 7 major ships.  Blenny also sank a number of smaller vessels in surface gun action, bringing her total to 63.

After the war in 1951, Blenny received a major conversion to a Guppy 1A (Greater Underwater Propulsive Power) configuration.  She received a streamlined “step” sail, a reconfigured bow, and all guns and other items removed to minimize hull drag.  Later, she was updated with a plastic (fiberglass) “Northern” sail, and a PUFFS sonar system, which added three prominent “shark fin” hydrophones on her upper deck.  Blenny and her Guppy conversion sister subs performed alongside the growing nuclear submarine fleet in the early years of the Cold War.  Blenny was decommissioned in November of 1969, and after languishing, was sunk as an artificial reef off Ocean City, Maryland.

The Model
The Revell Lionfish kit was a starting point for the build up of USS Blenny.  The Lionfish is an old kit, originally issued as Growler by Revell, and the conning tower is closer to a Gato than to a Balao class (although SS-298 Lionfish herself is a Balao).  One important issue with WWII Fleet submarines is the tremendous variation in outfitting between subs, as well as the continuous change and update in armaments, radar, and paint schemes during the war.  In addition, Admiral Lockwood was very supportive of a fair deal of “customization” by the submarine crews.  Hence, it can be a problem for the modeler in obtaining resources, particularly since crews were discouraged from carrying personal cameras.  Blenny’s crew made my job quite a bit easier.  Despite the official policy, the crew had aboard a 16mm camera with rolls of color film.   I had videotape transfers of that material to assist in building the model.

I used the hull of the Lionfish kit, removed the outlined freeflood holes by sanding, and used a drill and files to open up the limber holes in the pattern (half-moon) used by Electric Boat.  I also replaced the cleats, anchor, and capstan with white metal parts from HR Products. The forward torpedo tubes were filled with putty, and shutter soors made from styrene installed.  The rear torpedo tubes had the “blister” sanded off, and received putty and new doors.  During assembly, I carefully filled in the hull seams with minimal amounts of Bondo Spot Putty, and sanded the hull smooth.  Before closing up the hull, I built a false pressure hull using Evergreen plastic inside the front hull section, and painted it dark gray, such that one could not look through the hull by the limber holes.  I also located two holes for the brass post mounting on the base in the bottom of the hull. Over these, I built two small “boxes” of clay, in the bottom of the hull and used this as a mold to pour 2 part resin.  Later, these would be drilled out from the bottom as mounting supports.

 The kit conning tower was measured, and using plan drawings (Floating Drydock) and graph paper, I outlined the new configuration necessary to yield a Balao class sail.  I carefully cut the top and the back off of the kit conning tower, and fabricated a new back by filling the area with Bondo two part auto body filler.  After catalysis and hardening, this was carefully shaped to the new configuration by sanding.  Spot putty hid minor imperfections, and a new deck of sheet styrene with narrow lines installed. A side hatch was opened in the tower, and tubes for the ready ammo lockers installed fore and aft. The periscope shears were from HR Products, and brass handrails and lookout platforms were fabricated from wire and plastic for the shears.  The periscopes were turned on my Dremel as a mini-lathe to shape them.  Brass posts and wire were used to build the forward and aft gun railings, as well as handgrabs on the side of the conning tower.  The two 5”/25 guns were made from an HR Products white metal gun, heavily modified with about 25 additional plastic and metal pieces to 5”/25 submarine guns.  Fortunately, the Navy Submarine Museum and Library in Groton, CT. had a 5”/25 gun I could inspect and photograph.  The guns, less than an inch long, were the most tedious part of the work taking over a dozen hours each to construct.  Antenna posts (in the configuration that Blenny had in 1945) were brass and fishing line, with thin capillary tube “insulators”.  The propeller shafts were replaced with brass tubes.

The Blenny model was masked and airbrushed in Measure 32, as she was in 1945.  You will note that there are pink stripes on the periscope shears- they were there in 1945, and clearly visible in the movie.  I also added some light weathering around the anchor and the diesel exhaust ports with pastels.  After two coats of clear dullcoat, Blenny was carefully mounted on 2 brass posts installed in an oak base I had routed and finished.  Then, my wife and I carefully packed her for her last “Combat Patrol”: the trip via truck from Connecticut to Oregon, home of Frank Toon.  She did survive (with one minor piece of damage, easily repaired).  Frank subsequently donated the model of USS Blenny to the Naval Undersea Warfare Museum in Keyport Washington.

Total build time was just over 200 hours.   One photo compares the model to a straight “out of box” build of the Lionfish.  You can read more about Blenny on Frank Toon’s excellent WWII submarine site dedicated to USS Blenny history and stories at: http://www.webenet.net/~ftoon/memory/f_memory.html