Assertion: armoured cruiser | /r/HasProperty | armed with only 21-centimetre 8.3 inguns
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text: This was particularly true for cruisers, because the details of the Invincible class were kept secret for longer; this meant that the last German armoured cruiser, Blücher, was armed with only 21-centimetre (8.3 in) guns, and was no match for the new battlecruisers.