The almost twenty years long time series of precise and nearly global altimeter measurements of missions with the different sampling characteristics allow a very percise emperical modeling of ocean tides (cf. the already published models EOT08a, EOT10 and EOT11a). These models describe not only tidal elevations which with the corresponding currents are generally important for the coast protection of the coastal ecosystem. Ocean tides cause the energy conversion into the heat and short period mass redistribution in the system Earth. The tidal effects have to be corrected or modeled for the geodetic space techniques: e.g. the geometric effect on the altimetric surface heights, gravitational effects on the GRACE and GOCE gravity fields, effects on the Earth rotation, and the loading effects for the precise point positioning.