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Navantia offers two S-80 Plus class submarines to Philippine Navy.

| 2023

According to information published by the Philippine Daily Inquirer on August 29, 2023, Spanish state-owned company Navantia has put forth a $1.7-billion proposal to the Philippine Navy to create a submarine fleet.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Spanish S-80 Plus-class submarine Isaac Peral. (Picture source: Navantia)

Guillermo Zamarripa, Navantia's representative, detailed that the proposition includes two S80 Isaac Peral class submarines, coupled with extensive crew training and a transfer of technology, supporting the Philippines' aim to self-produce defense requirements. Zamarripa emphasized Navantia's holistic approach, ensuring the Philippines receives a complete solution.

Notably, the Isaac Peral class submarines, part of Spain’s naval assets, offer long-range capabilities, with an ability to remain submerged for up to three weeks.

Measuring 81 meters, these submarines can undertake a plethora of naval operations, from intelligence gathering to launching missiles like the American Tomahawk and Harpoon.

To accommodate these advanced submarines, a submarine base, equipped with all necessary infrastructure, is planned for Ormoc, Leyte. Ormoc was chosen for its strategic geographical location, low environmental risks, and close proximity to vital logistical hubs.

Navantia's comprehensive training program, resembling its facility in Spain, will utilize simulators, hands-on training, and the Spanish Navy's expertise. The Spanish Navy's involvement promises quality training and mentorship, ensuring the Philippines maximizes the potential of the submarines.

About the class

With a displacement of 2,965 tons (2,918 long tons) when submerged, she measures a significant 81.05 meters in length, 11.68 meters in beam, and has a draught of 7.3 meters.

This submarine is powered by a single-shaft Etanol-AIP propulsion system, three bio-ethanol engines each producing 1,200 kW, and a 3,500 kW electric motor.

An additional AIP fuel cell unit provides 300 kW, all seamlessly integrated with Vulkan coupling RATO-S G-561W, which can handle 280 kN·m of torque. The submarine can achieve speeds of 12 knots surfaced and 19 knots submerged, boasting an impressive range of 8,000 km.

She can remain submerged for 30 to 55 days and can dive up to 460 meters. Manned by a crew of 32, the submarine can additionally accommodate 8 troops, offering versatility in various maritime scenarios.

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