Translate the following English sentence to French:
"For all these reasons, we believe that, if the intention is to promote short sea shipping in a realistic and effective way, it is essential to reorganise the current provision of port services, by improving their efficiency and reducing their costs."
Dès lors, nous pensons que si nous voulons promouvoir le transport maritime à courte distance de manière réaliste et efficace, il est indispensable de maintenir le type actuel de fourniture de services portuaires, en améliorant leur efficacité et en réduisant leurs coûts.