Crowley Maritime Corp. has appointed Jonathan Zier manager of business development in Houston, USA. Zier will assist customers globally with marine transportation projects such as sealifts and beach-landings, as well as offshore and coastal towing and installation of rigs, spars and other structures.He will also be responsible for providing solutions for alternative energy projects such as offshore wind power generation and liquefied natural gas (LNG) terminals and other projects requiring offshore or coastal equipment and expertise. Zier will report to Johan Sperling, vice president of marine services in the Crowley Shipping group.