@bobspruster
There is the difference in the way of assigning men to ships, as well as the close relationship of French and Englsih which will cause a confusion.
One may think of the orgainsations in this way
In the US Navy and Her Majesty's Royal Navy : the sailors will both sail the ship (the sails, the steering) and fire the main guns and also (more rare) fight on the land with musket or cutloss.
The Marines are a different arm of service. They will be the infanterie of the ship, but (more rare) they will help at the great guns or to make a change of sails
In the French service,
The sailors will be in two broad sortes : the sailors who will sail the ship and the sailors who will fire the great guns. (in effect there are many "classes" or skills for sailors, bit these are the two main sortes.
If there is a need for infanterie on the ships, a detachement of the regular armee will be sent (it is call ed the "garrison" of the ship).
In the time of the Empire, there was little for the sailors to do on the seas.
There were some "équipages" (it means "crews") of the sailors who sail the ship who were sent as infanterie to fight on land, such as in Spain
Also, there were some équipages (for the small boats of the navy) sent to support the the making of bridges of boats, to sail a boat on a river, etc.with the main armee.
Lastly, some of the best sailors who sail ships where taken into the Garde, and it is a picture of these you have given to us.
For the sailors who shoot the great guns, they are also assigned to the great guns of the ports and alos have workers and armorers to make make installations for guns and to service and to maintian them.
These sailors who shoot guns did form in various bataillons and compagnies, and there were many attempts to change this organisation.
in 1813, it is 20 bataillons of 10,000 such "artillerie de la marine" were assigned to fight as infanterie under the général Marmont.
There will be uniforme :
bleu habit long, with red piping on cuff, collar, retrousssis, etc.
red shoulder straps or epaullettes for 1st Cannoniers
yellow buttons
bleu pantaloons long
mixed of black shako (some with red cords and pompon) and chapeau (red pompon)
mix of white and black leatherwork
bleu great coats -- it is like the garde
bleu veste
black shoes and short gaiters
to look for them some more, you can try to search with the French name :
"régiment(s) d'artillerie de la marine"