The First S-80-Plus Class Submarine Will Launch New Era For Spanish Navy
S-81 Isaac Peral is one of the largest non-nuclear submarines in the world. The long-range 2,965 ton boat will bring new capabilities to the Spanish Navy and is being offered on the export market. Uniquely for a Western non-nuclear submarine it is equipped to launch Tomahawk missiles.
H I Sutton 22 Apr 2021
On a sober day, as the submarine community awaits news of the missing Indonesian sub, KRI Nanggala, there are submarines elsewhere with more positive stories. New submarines are being launched. The Royal Navy’s fifth Astute Class boat, HMS Anson, has been rolled out in Barrow-in-Furness, UK. And in Spain another new submarine, the first in its class, is being launched by Navantia.
The Spanish Navy’s new submarine, Isaac Peral (S-81), is being christened today in Cartagena, Spain. It is one of the largest non-nuclear submarines in the world and promises to be a major step up for the Spanish Navy (Armada Española).
Its S-80 Plus design will be characterized by its use of a bioethanol fuel cell AIP (air independent power) system. Known as BEST (Bio-Ethanol Stealth Technology) by the submarine’s builder, Navantia, this offers some advantages over other AIP systems. After use the ethanol is reformed which overcomes the need to separately store hydrogen aboard. Other AIP submarines need hydrogen tanks. Additionally, the ethanol is a relatively available fuel to source.
The submarine will be armed with three primary weapons. These are the DM2A4 heavyweight torpedo, UGM-84 Sub-Harpoon anti-ship missile and SAES seabed mines. It was also planned to equip them with the UGM-109 Tomahawk land attack cruise missile. This would place the Spanish Navy in an elite group of submarine operators with a ‘first night’ strategic strike capability. While the Tomahawk order has passed into history, the submarine retains the capability to carry them if they are acquired in the future. This capability is unique among non-nuclear NATO submarines.
About The Name: Issac Peral
The lead boat’s name harkens back to a time when Spanish engineers were among the first pioneers of submarine warfare. Isaac Peral (1851-1895) was a naval officer and engineer who designed the first all-electric submarine. The craft was commissioned into the Spanish Navy in 1889, more than 10 years before the US Navy and Royal Navy commissioned their first Holland Class submarines.
In his honor, the name Isaac Peral has been given to three more previous submarines of the Spanish Navy. Despite Peral’s pioneering work the Spanish postwar submarine fleet has partly been built from acquired types. Local production of French designs started at Cartagena in the late 1960s with the Daphné-class. Four of these were build, followed by four Agosta Class boats in the 1980s.
In the 1990s Navantia (Spain) and DCNS (Now Naval Group, France) started the joint development of the Scorpène Class submarine. This was aimed at the export market and has been successful with sail to Chile, Malaysia, India and Brazil.
However the design was too small for Spanish requirements and the S-80 submarine program was launched. At this point Navantia and Naval Group parted ways and the S-80 is seen as a Spanish design. Naturally there are some general characteristics of the Scorpène in the design. This is most visible in the sail where the resemblance is clear.
https://www.navalnews.com/naval-news/20 ... for-spain/
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