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).
Helsinki, Finland weather text for Sun 23rd April. The Helsinki, Finland weather is going to be moderate or heavy snow showers. Helsinki, Finland visibility is going to be around 14 km i.e. 8 miles and an atmospheric pressure of 999 mb. The daytime temperature is going to reach 5 Â°c and the temperature is going to dip to -1 Â°c at night.