Do merchant mariners work 7 days a week?

Merchant mariners typically work 7 days a week while they are at sea, which can last for extended periods, often several weeks to months. During their time on board, they follow a watch schedule that usually consists of standing watch for 4 hours, followed by 8 hours off. This cycle continues throughout the week, meaning they are constantly engaged in their duties without a traditional day off. However, it is important to note that while they work continuously during their voyages, they do earn long leaves after completing their contracts, allowing them to spend significant time at home before their next assignment. Most mariners are hired for specific voyages, which means they may not have job security between trips, adding to the unique nature of their work life. This demanding schedule is essential for maintaining the operations of maritime transport, which is crucial for global trade.