Does Your Sea Time Qualify You for the Upgrade You Want?

Before you pay for your next license upgrade, check what your sea service actually qualifies you for.

Your total days matter. So do vessel tonnage, operating waters, the capacity you served in, and the endorsement you held during that service.

“I’ve got enough days” is only part of the answer.

A mariner working toward Master less than 500 gross register tons (GRT) faces different requirements from someone pursuing Master less than 1,600 GRT. A shipmate getting approved for the same upgrade doesn’t establish your eligibility, even if you sailed on the same vessel.

And the days have to be provable

Years ago, a seaman asked me to review his sea time. He was an Ordinary Seaman working toward his Able Seaman–Limited endorsement. He had kept his own record on a notepad. It had dates. It had no company letterhead and no signatures.

Without signatures, that record was just a piece of paper. Together we tracked down his captains and asked them to sign off on his time, and they did.

He was a good worker and pleasant to sail with. Most captains would have deleted that email. Your reputation aboard turns out to be part of your paperwork.

Years later, he sailed with me as an AB.

Before booking classes, do your homework

• Identify the exact endorsement and route you want, and whether you need the STCW endorsement too.
• Get the current National Maritime Center (NMC) checklist and read the regulations it references.
• Review your sea-service records for vessel tonnage, dates, waters served, and your position aboard.
• Resolve questions before spending money. When contacting the NMC, have your records and the specific regulation in front of you.

As a captain and educator, my advice is simple: understand the requirements well enough to ask a precise question, and understand the answer.

Have your own system for sea time

Never trust the company to keep it for you. A record of your service should show at least:

• Vessel name and official number
• Gross tonnage
• Your dates aboard
• Your position
• The route or waters
• A signature from the master, owner, operator, or chief engineer

Without those, it’s just a piece of paper.

Make it easy: Sea-Service Letter template and audit checklist · Sea-Time Planning Calculator

Plan your training around the credential you qualify for and the service you still need.

The Captain Says: Check your sea time before you spend your dime.

—Capt. Mike
Mariners Online