

The Israel Navy (INF) released a rare video Monday, allowing a sneak peak at its most expensive weapon – the stealth submarine.
The video shows an exercise in which the submarine's crew fires torpedoes at "enemy warships."
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The exercise was held as part of the INF's preparations to receive its fourth German-made submarine, which is currently making its way to Israel. A fifth submarine has been contracted.
The Navy plans to add more sailors to its elite submarine unit and the current submarine crewmen course graduation will mark a new record in their numbers.
Graduates of the 16-month course will be given the rank of sergeant. Each has mastered a mechanical discipline of submarine operations, such as cruise control, navigation, electricity, weapons and sonar.
"The submarine – Israel's most complex marine weapon – is only as strong as its crewmen," INF Chief Admiral Ram Rotberg said Monday. "They are quality professionals with stern battle ethics."
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