Penguin
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The Greek 209 Okeanos (S118) completed an upgrade which was achieved by cutting the boat in half aft of the control room and adding a 6 m plug with an 120 kW Siemens AIP system to the shipIt was already somehow impressive to US officials in 2004, imagine today! can you?
Type-209 does not have AIP, you can talk about type-214 if you want some analogy.
HS Okeanos re-delivered to Hellenic Navy - IHS Jane's 360Sea Platforms
HS Okeanos re-delivered to Hellenic Navy
Theodore L Valmas, Athens - IHS Jane's Defence Weekly
20 October 2014
Greece's Type 209/1200 submarine HS Okeanos (S-118) was redelivered back to the Hellenic Navy (HN) from Hellenic Shipyards at Skaramangason on 20 October, having completed its Neptune II mid-life upgrade programme.
Sea trials of the boat are expected to begin immediately and it should be fully operational by the end of the year.
The third of the four-strong Poseidon class, HS Okeanos was launched by HDW in Kiel in November 1978 and arrived in Greece in January 1980.
In 2002 the Neptune II modernisation programme was signed with HDW's successor, TKMS, for three Type 209/1200 submarines. The programme included insertion of a 6.5m-long air-independent propulsion section, along with the fitting of a new sonar array, combat management system, optronic periscopes and Sub-Harpoon launch capability, to bring the Poseidon-class boats up to standard of the Type 214 submarine, of which the HN has ordered four.
However, following a prolonged contractual dispute with TKMS, in 2009 the HN terminated the Neptune II programme, leaving HS Okeanos as the only upgraded boat, in order to fund the construction of two more Type 214 submarines.
Under Greece's current budget situation, though, the construction prospects of the two Type 214 boats remain somewhat tenuous.
Two Hellenic Navy submarines set for service - IHS Jane's 360
Turkey considered upgrading its 209s with AIP ut eventually chose to get new boats with AIP
(Atılay class mid-life refit with AIP propulsion cancelled). South Korea also looked into fiting AIP to 209s. Again funding prevented actual upgrading. However, there is no technical reason why 209 cannot have AIP and in fact 1 boat does.
TURKISH NAVY SHIPBUCKET: Type 209/1400 AIP Üzerine Çalışmalar
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