Boat motor serial number 1B429446 - Light Outboard Motor Boat Bass Fishing Saltwater Base

Question edited for a lot more clarity.

They are normally listed by HP.

https://www.google.com/search?q=mercury+outboard+serial+number+lookup

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Hello,
The manufacturer of the boat should be capable to give you the make/type/power/serial information if you give them model and serial of the hull.
At least if it wasn't changed during the lifetime of the boat.

Hey Jan,
The model number/serial number should be on plate attached to the engine mount...You need the model number to determine year.
Outboard Motors Boat Parts Marine Engines Inboard Boat Motor

Hey Arthur,
This serial number does not show up..???Please look for more numbers on any plate or freeze plug..
These guys can help.. need more info though...

Outboard Motors Boat Parts Marine Engines Inboard Boat Motor

Hey Arthur,
These guys will take care of you,,, that serial number doesn't satisfy the rewquirements for a search...? They will need more info.. more numbers on any plate..freeze plug..look around the outside of the engine carefully..
Outboard Motors Boat Parts Marine Engines Inboard Boat Motor

Do you know the manufacturer of the boat motor?

The Manual Store also has some useful boat motor model year lookup data:
Boat Motor Model Year Lookup Guide

The serial number on the boat is located on the back (transom) right hand side near where the hull meets the deck. On the outboard motor it's on the bracket that attaches the motor to the transom and usually on the engine block as well.