Need help identifying trophy for sale
 

I bought this trophy from a sale many years ago. Every time I have researched it I have drawn a blank.
The bell is engraved as follows...... Shipping Channel Muskie Marine Offshore Classic
Printed on the two plaques on the base is the various production classes and the winners names.
It stands about 18 inches tall and is very heavy.
Are there any knowledgeable people out there who can assist with information.
It is for sale as soon as I know how to describe it.

I cannot post a link as i am a new user.

Many thanks
Phil