Casio makes a line of waterproof/shock resistant phones that are perfect for the sailor. They come in both regular and a smart phone
versions. You can swim with them, use the camera
surfing, etc. Only problem is they don't float and you know how I found that out. After I found it in about 3' of water
it still worked fine. Other than the waterproof feature, their shock resistance is a big plus. Until I got the Casio phones, my cell phones struggled to survive till the end of the contract
period. The Casios worked just as well at the end of the contract
as at the begiinning. Verizon is my service
provider. Have seen them in their stores but not always. You may have to go on line to find them.