USS Becuna

USS Becuna
Paese	Usa
Classe e tipo	Classe Balao
Lanciato	Il 30 gennaio 1944
Fuori servizio	7 novembre 1969

USS Becuna (SS/AGSS-319), un sottomarino classe Balao, è un'ex nave della Marina degli Stati Uniti chiamata così in nome della becuna, un pesce simile a un luccio d'Europa. È stata designata National Historic Landmark per il suo servizio nella seconda guerra mondiale, per la quale ha guadagnato quattro stelle della battaglia. Attualmente serve come nave museo all'Independence Seaport Museum di Filadelfia, Pennsylvania.

fonte: USS Becuna su Wikipedia

USS Becuna SS-319 Walk Around
Fotografo	Bill Maloney
Localizzazione	Inconsapevole
Foto	164

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USS Becuna SS-319 09

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The Deep-Diving Fleet Submarine

Le USS Becuna è un Balao-class submarine, the most successful class of American submarines in World War II. Launched in 1944, the Becuna was a “fleet submarine,” designed to travel with the main battle fleet across the vast Pacific. Unlike the earlier Gato-class, the Balao-class utilized high-tensile steel (HTS), allowing it to dive to depths of 400 feet (120m), significantly safer from Japanese depth charges.

Attribute	Technical Specification (WWII Configuration)
classe	Balao-class Diesel-Electric Submarine
Equipaggio	10 Officers, 70-72 Enlisted
Armamento principale	10 × 21-inch (533 mm) Torpedo Tubes (6 forward, 4 aft)
Deck Gun	1 × 5-inch / 25 caliber dual-purpose gun
Motopropulsore	4 × Fairbanks-Morse Diesel Engines; 4 × Elliott Electric Motors
Surface Speed	20.25 knots (37.5 km/h)
Submerged Speed	8.75 knots (16 km/h)
Test Depth	400 feet (122 m)

The GUPPY Modernization

Streamlining the Hull: In 1951, the Becuna underwent a GUPPY IA (Greater Underwater Propulsive Power) conversion. This removed the deck guns and replaced the bulky WWII bridge with a streamlined “sail” to reduce underwater drag.
Snorkel System: The conversion added a “snorkel” (inspired by German technology), which allowed the submarine to run its diesel engines and recharge batteries while submerged at periscope depth.
Battery Upgrades: The internal “Sargo” batteries were replaced with much larger, high-capacity battery banks, nearly doubling the boat’s submerged endurance and speed.
Sonar Evolution: Her radar and sonar systems were upgraded throughout the 1950s and 60s, transitioning her from a surface-running raider to a true underwater Cold War interceptor.

Service and Preservation

WWII Combat: During her five war patrols, the Becuna was credited with sinking several Japanese merchant ships and tankers, totaling thousands of tons, earning two battle stars.
Cold War Role: Post-GUPPY, she operated primarily in the Atlantic and Mediterranean, tracking Soviet naval movements and participating in NATO exercises until her decommissioning in 1969.
Museum Ship: Today, the Becuna is a National Historic Landmark. She is preserved at the Independence Seaport Museum in Philadelphia, Pennsylvania, where she is moored alongside the Spanish-American War cruiser USS Olympia.