I think low emissivity (low e) glass would be a mistake in a Caribbean
type warm marine environment
. Low e works in the 3-5 and 8-14 thermal radiation tranmittance bands. Consider in the marine environment
that the water
temperature and sky temperature are normally colder than the air temperature. Therefore, the objective is to radiate heat to the cooler environment.
True low e does not block or retard the transmittance of solar
radiation which peaks between 400 and 70 nanometer wavelengths.
radiation will enter your pilot house and heat up the contents. The contents will re-radiate the heat in the 3-5 and 8-14 micrometer bands. If the low e coating is on the inside of the window the heat will be reflected back into the pilot house keeping it warmer.
If the coating is on the outside of the glass the radiant heat will be absorbed by the glass and heat up. The heated glass will not be able to radiate to the colder environment because of the low e glass. The glass will stay warmer and radiate more heat back into the pilot house.
If you are in a cold environment then low e glass would be of some benefit.