Flags of convenience allow ship owners to register their ships in countries other than their home country to take advantage of lower costs. This provides advantages like reduced registration fees, taxes, and operating costs up to 27% lower through access to cheaper labor. However, it also creates disadvantages like difficulty identifying real ship owners, lack of safety policies for sailors, and use of older ships which can increase risks. Many ships register with Panama, Cyprus, and other open registry countries to save on expenses, though it comes at the cost of less oversight and accountability.