3D tugboat design comes to life

3D tugboat design comes to life

Signet Maritime Corp. has begun construction on the first commercial vessels in the United States developed using a purely 3D design process. The tugboats will be built to the Advanced Rotortug design by Robert Allan Ltd., which places two azimuthing drives forward and one aft. The concept was first developed by Dutch company Kotug, and tugboats outfitted with this propulsion…
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Ballast water treatment technology  advancing rapidly

Ballast water treatment technology advancing rapidly

Managing ballast water is an indispensable part of maritime operations. How that water is treated before it is discharged will grow in importance as new international rules come into effect.  The Ballast Water Management Convention entered into force internationally in September 2017. As of July 2021, 86 countries have signed onto the agreement. Regulations in the United States enforced by…
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Cybersecurity 101: Playing it safe when logging in  at sea

Cybersecurity 101: Playing it safe when logging in at sea

Mariners spend less time online than the average landlubber with constant access to Wi-Fi and 5G cell towers, but they often rely on the internet more for managing their lives. Paying bills, shopping or connecting with family and friends during months-long assignments are all done online — using the spotty and often sluggish remote access available to seafaring crews. And…
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Mariner training after COVID: Will online render ‘hands-on’ obsolete?

Mariner training after COVID: Will online render ‘hands-on’ obsolete?

An emerging trend before the pandemic, online training has now become a major element in maintaining and improving mariner skills almost everywhere — with consequences that so far seem to be mostly positive. Ukraine-based Danica Crewing Services recently conducted a broad survey of mariners that included questions about online training. Fifty-three percent of seafarers said they receive some sort of…
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Tackling the fishing gear problem

Beyond collisions with ships, whales inhabiting the waters of North America are vulnerable to injury or death from another human-related threat: fishing gear entanglement. Research conducted by the New England Aquarium and the Center for Coastal Studies showed that scars found on 83 percent of endangered North Atlantic right whales and about half of endangered humpbacks between Cape Cod and…
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New technology aims to help mariners save the whales

New technology aims to help mariners save the whales

While humans once stood in awe of the size and strength of whales, the roles have been nearly reversed since the mid-20th century as increasing ship traffic has added insult to the injury done by the era of whaling. To reverse the trend, marine scientists, environmental advocates and sympathizers in the nautical community are trying to harness technology to protect…
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Advanced props,  rudders  provide new efficiencies below the waterline

Advanced props, rudders provide new efficiencies below the waterline

It took a decade or two from the invention of the marine propeller in the 19th century for the technology to become widely accepted. Thereafter, adoption has been nearly universal, but progress toward improved efficiencies has come in fits and starts. Now, though, a combination of factors — ranging from advances in computer numerical control (CNC) machining and modeling software…
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