US Navy engineers aboard the USS Boxer amphibious assault vessel use an improvised test
chamber to evaluate mask fit.
At present, the masks that are certified to provide reliable protection against COVID-19 (minimum rating N95) are in short supply, so we have to buy or make our own untested mask. Here are some tips I have based on my years of work in environments that require respirators. The Center for Disease Control also offers […]
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With hurricane season ramping up, many of us are going over our rope inventory, making sure we have more than enough lines to secure the boat. Chafe gear fights external friction on our lines, but how do we combat internal heat build-up? Dock lines are particularly susceptible to overheating. If the boat is exposed to short-period chop from the side, the frequency can be high and the force can exceed the 10:1 safe working limit, and even with rain or spray to cool the rope there may be significant weakening due to internal friction.
