The roughly $700 million Irish Coast Guard contract won by Bristow Group Inc. VTOL and announced on Monday is the company’s second largest ever and combined with a recent UK search & rescue contract sets the company up for significant stable cash flow, according to Benchmark. Bristow Group’s search & rescue is its highest margin service, said analyst Josh Sullivan. The company provides aviation services to a base of offshore energy companies and government entities, including personnel transportation, search & rescue, medevac and ad-hoc helicopter services. The contract was announced by the Irish government and is valued…