Ocean Currents and Predominate Wind Directions:

(For this map, it is assumed that the planet rotates east to west)
Black, red, blue, and green blocks are just measurement keys and may be ignored.
The black line is the equator.
Black to Red is the tropics.
Red to Green is the temperate region.
Green to the top/bottom of map is polar.
Predominate wind patterns are marked with yellow arrows indicating direction of wind. This is only an average direction and does not account for daily changes in wind direction, High/Low pressure areas, weather patterns, or strength of wind.
Ocean currents are marked in light and dark purple. Light purple are warm surface currents and dark purple are colder, deep currents.
Observations:
Sailing east to west is as simple as unfurling the sails, while returning west to east will require tactics to sail into the wind (tacking or shunting).
Areas with an eastern facing coastline near a warm current can expect hurricanes unless they are very close to the equator, in which case, monsoon type weather may occur.
The worst sea storms will occur along the blue lined regions.
Local weather in your nation will vary with humidity (warm currents=higher humidity), land temp (proximity to equator), wind obstacles (mountains have a wet side and a dry side), etc. I know I have to revise my nation's listed climate, double check yours.
Converging cold currents near Tamega means an abundance of fish (and a climate nearer like the California coast). Warmer currents near the Tekann means a nutrient poor sea and less plentiful fishing.