Part of Ship ?

[eborac]

This piece was found today in an area of a reef flat where parts of a shipwreck were reportedly found in 1884. There is a metal pin & a rounded recess close to the pin.
Whilst we find it impossible to tell what it could be, we're hoping someone has seen similar pieces & could possibly shine some light onto it ! The wood has turned totally black & is honeycombed by borers.

 

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[Boatlode]

Whatever it is, if it's wood and you like it you better get it into a freshwater bath or it will crumble.

 

[eborac]

In this pic the rounded recess can discerned somewhat better. From this angle it looks as though it could be some kind of locking latch.

 

[Alexandre]

This a concretion. Until preserved, it can be anything, from trash to part of a shipwreck. And, even if treated, it can be inconclusive, with no origin, no dating.

 

[A2coins]

That would be cool if it was

 

[ROBOTCOP13]

Looks like a broken lawn mower blade

 

[enrada]

It was used by a side scan guy to mow the lawn!