Linq to SQL c# SilverLight Search Like

[OperationContract]
List<SearchForVessel> GetSearchForVessel(string inpQuery)
{
  PositionDataClassesDataContext context = new PositionDataClassesDataContext();
 
  var res = from etas in context.Lloyds_ETAs
  join vessels in context.Lloyds_Vessels on etas.ImoNumber equals vessels.imo_no
  where etas.ImoNumber.Equals(inpQuery)
  select new SearchForVessel
{
  Vessel_ID = etas.Vessel_ID,
  ImoNumber = etas.ImoNumber,
  Vessel_Name = etas.Vessel_Name,
  Last_Place = etas.Last_Place,
  Last_Place_Location = etas.Last_Place_Location
};
return res.ToList();
}