Real asset investors also need a longer investment horizon, as investments in real assets normally require longer commitment of capital. Ship funds typically have a life of 15 to 20 years; aircraft funds more than 15 years. From the investor's point of view, it is therefore important to be able to assess the potential of the investment vehicle reliably. In addition, private investors mainly invest larger amounts. In 2011, the average subscription for investments in closed-end funds across all asset classes in Germany was EUR 30,575 (up from just over EUR 26,000 in 2010). Wealthy private clients with high investment.