In-depth analysis, history, photo essays and technical explorations from Marine Insight 360's expert contributors and seafarers.
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What a blue hole is, how ice-age limestone made these marine sinkholes, famous ones from Belize to Mexico's 420 m record, and why divers respect them.
Marine Insight 360 · Aug 3 · 4 min read
HMS Hood was the Royal Navy's pride for twenty years, lost to Bismarck in minutes in 1941 with 1,415 men. Her story, the battle, and the wreck found in 2001.
Marine Insight 360 · Aug 3 · 4 min read
What a conex box is, where the military name came from, standard 20 and 40 foot dimensions, what the boxes are used for, and how to buy one without regret.
Marine Insight 360 · Aug 3 · 4 min read
What a container ship is and how it works: TEU sizes from feeder to 24,000-box giants, who crews them, how fast they sail, and why they carry your shopping.
Marine Insight 360 · Aug 3 · 4 min read
What a TWIC card is, who must carry one, what it costs, how the TSA background check works, and how mariners and truckers apply for and renew the credential.
Marine Insight 360 · Aug 3 · 4 min read
What the Merchant Mariner Credential is, who needs it, the TWIC, medical and drug-test requirements, entry-level ratings, and how officer endorsements work.
Marine Insight 360 · Aug 3 · 4 min read
Find out why Seawise Giant (Knock Nevis) remains the biggest ship ever built, its dimensions, history and how it compares with modern giants.
Marine Insight 360 · Aug 2 · 4 min read
What a bosun does on a merchant ship: the deck crew's foreman, the maintenance planner's right hand, and the rank between ratings and officers, explained.
Marine Insight 360 · Aug 2 · 4 min read
The consignee is the party entitled to receive a shipment. What the role means on a bill of lading, how it differs from shipper and notify party, and the risks.
Marine Insight 360 · Aug 2 · 4 min read
Sounding means measuring depth: of liquid in a ship's tanks with a tape, or of water under the keel with an echo sounder. How both work and why they matter.
Saqib Ahmed · Aug 2 · 4 min read
What the container ship Dali is, how a loose signal wire blacked her out into Baltimore's Key Bridge, what the NTSB found, and where the case stands now.
Marine Insight 360 · Aug 2 · 4 min read
What the exhaust manifold does on a marine engine, wet versus dry designs, why raw-water cooling corrodes them, and the failures crews learn to catch early.
Saqib Ahmed · Aug 2 · 4 min read
