I think I found what I needed.
Quote:
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The SQS-505 can be hull-mounted in a fixed dome configuration. Canadian warships have the hull-mounted transducer in a retracting dome. The Belgian navy uses a fixed-dome and retractable transducer. The Dutch and Greek navies choose a bow dome.
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http://www.forecastinternational.com...asw/as5543.htm
In other words it dosn't matter I can always say its retracted.
