Download Brochure. The HydroBox HD TM is a portable high- resolution, shallow water echo sounder. Designed for inshore and coastal hydrographic marine surveys up to 1000 meters of water depth. Extreme ease of use, portability, and cost efficiency make this device the perfect choice for shallow water hydrography.
Guide to Helsinki weather in May The average maximum daytime temperature in Helsinki in May is a comfortable 15Â°C (59Â°F). The average night-time temperature is usually a cold 5Â°C (41Â°F).
Most of Finland has a subarctic climate but the southern part has a humid continental climate. Temperatures are comparatively mild for its latitude because of the moderating influence of the North Atlantic Current, Baltic Sea, and more than 60,000 lakes. <br /><br /> Finland has four very distinct seasons, but on average the winter is really dominant and year is really cold and dark all over the country.