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).
Satellite view is showing Helsinki, seaport, largest city and the national capital of Finland, the Nordic country in Northern Europe.The city is located in the southern part of Finland at the shore of the Gulf of Finland, the easternmost arm of the Baltic Sea.atellite view is showing Helsinki, seaport, largest city and the national capital of Finland, the Nordic country in Northern Europe.