The minerals and vitamins and nutrients are in perfect harmony with each other. Celery leaves are high in vitamin A, whilst the stems are an excellent source of vitamins B1, B2, B6 and C and dense in potassium, folic acid, calcium, magnesium, iron, phosphorus, sodium and essential amino acids.
1 ships will sail at varying capacities depending on itinerary and season.  the average cruise ship passenger capacity is around 3,000 guests for ocean liners and around 150 guests for bigger river cruise ships.
The number of passengers carried by the cruise industry has grown year-on-year and is expected to exceed 25 million in 2019. The average cruise passenger brought a revenue of 1,779 U.S. dollars, but, with expenses per passenger also high, the average profit was only 226 dollars in 2015. Facts on the cruise industry.