Found on Beach in UK, help me identify!

[Shipwrecks]

Found this thing on a beach in the UK, its solid iron and is very heavy. Signs of what looks like where a handle was. Maybe a cup. Help!

 

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[jewelerguy]

if it's solid on one end, perhaps a 16th century signal cannon?

 

[robfinds]

if it's solid on one end, perhaps a 16th century signal cannon?

I thought maybe signal cannon (maybe)?.

 

[CRUSADER]

I had the same thought as well.