Your restriction of 1.5m x 1.0m is going to be the limiting factor. Good, high efficiency panels
produce somewhere between 170 and 200W/m2 at standard irradiance (1000W/m2, which is high noon with no clouds and less than 10-15 degrees from normal incidence). That means your available area can maybe generate 300W. 300W at 13.6V charging
voltage is 22A. That sounds good, except that a good installation
(and boat installations are rarely good) gives 5 to 6 times its rating in energy production every day. So, you would get 22A for five hours, which is equivalent to your 11A for 10 hours, which then means you are getting 10/24 of your daily requirement by fitting all the solar
you say you have room for. The most critical aspect of the installation
is reducing, as much as your reasonably can, the loads.