Verdict: Booster aerial for picking up wifi internet - useful if you're at the limit of your marina's coverage, or for finding free signals from further afield.
Verdict: Designed to keep a small crew in constant contact and never miss a call. The headsets, connected by Bluetooth, are also a great safety feature.
Verdict: The static graphic doesn't give the height or intensity of the tide, but the moonphase cycle tells you if there's spring or neap tides at the time.
