Topband: Vertical antenna over the sea

[EA1DDO - HotMail]

Hi everybody,

  I am thinking to install a Titanex V160HD vertical antenna over the sea, over a small harbor (pier), but it is a public zone so I can install the antenna but I can not install radials, elevated radials, or ground radials.
  Anyone knows if is enought to place the antenna over the sea to perform well or radials are a must ?
  Any idea? 

  Thank you.

  73, Max - EA1DDO/HK1DX