A sea is an instance of open water. Open water contains lakes, rivers, ponds, et cetera — something not small and manmade. You will begin your training in a “confined water” scenario. We see it in swimming swimming pools and bathtubs and so on. Studying the fundamentals in a swimming pool obviously lessens the dangers. Sporty huge automobiles had principally disappeared by now, and so would the Marauder after just 6043 sales that mannequin 12 months. Annual production averaged round 100,000, though there were again-to-back information for 1965-66 — over 165,000 each year. The four-series massive-car line (which might need been Edsels had things gone better there) remained two-ton heavyweights with large compound-curve windshields, however a handsome facelift eliminated a bit of chrome whereas including a tidy concave grille and extra-discreet “gullwing” rear fenders. The joint ache caused by decompression sickness is termed “the bends.” This occurs when a diver comes up from depth too rapidly, and might have worse results. The compression allows a diver to stay beneath longer — a traditional quantity of air would not final very long. This enables more vitality to be dedicated to locomotion and exploration.

For the uninitiated, it’s fascinating, and greater than a bit scary. At round $2150, it value some $160 greater than the standard coupe, but it surely wasn’t the costliest 1950-fifty one Merc: The wagon was over $four hundred extra. Custom sedans and wagons and a posh Villager wagon with imitation wooden trim aided ‘sixty two sales. Volume dropped to about 286,000 and the make’s production rank fell from seventh to eighth — not encouraging for an all-new design in a fairly robust gross sales year. Dealers pushed arduous with two-door sedans, however Medalist sales came to only 45,812 in all. A 255-bhp 312 was newly standard besides on Cruisers, which carried a 290-bhp, 368-cid Lincoln V-eight that was optional elsewhere. Larger compression boosted the flathead V-eight to 125 bhp on unchanged displacement. So have been powertrains, together with Ford’s fantastic new small-block V-eight with 221 cid and 145 bhp or 260 cid and 164 bhp. The only differences had been that the parallel model strains encompassed 5 – 6 totally different size classes as an alternative of 1 or two, and that Mercury styling often associated extra to Lincoln’s than to Ford’s. The Meteor’s styling was busier than the Fairlane’s and mannequin names were totally different, but bodies had been shared. As Dearborn delayed its first all-new postwar models to 1949, interim Mercurys had been similar to the ’42 editions.

The 1950 fashions gained a hood-entrance chrome molding bearing the Mercury name; the ’51s mixed this with a large semicircular crest and in addition sported extra-outstanding grille bars, bigger parking lights (swept back to the entrance wheel wells), and longer rear fenders with rounded corners and vertical trailing edges. Although the Plexiglas front half-roof was tinted and a snap-in shade was offered for scorching weather, prospects complained the interior heated up like a sauna. However, few people really use the capitals, similar to few people remember that the word “SCUBA” does not refer primarily to a type of diving, however to the tools itself. It is like a simplified version of floor-supplied air system. A snorkel is a short tube permitting the diver to breathe floor air. Right here, we’re speaking about air that’s enriched with other parts, that are useful to the diver. A cylinder or tank carries a diver’s provide of compressed air. In recreational scuba, amongst other types, divers breathe air from their tank solely by way of their mouths. There’s a great bit to study scuba, even for simple recreational divers. Just a few facts about scuba: Technically, it should be written SCUBA, as it’s an acronym for Self Contained Underwater Respiration Apparatus.

It stands for “Self Contained Underwater Respiratory Apparatus.” On this quiz, we’ll be lowercasing the word, which is how most divers (and others) write it. Tradition returned for Silver Anniversary year 1964 in a revived 4-series line of Monterey, Montclair, Park Lane, and Commuter/Colony Park wagons. The first arrived at the low finish of the 1961 full-size line: two- and 4-door sedans and hardtops in “600” and nicer “800” trim, supplied at vastly lowered prices beginning at $2535. Comet acquired its first main overhaul for 1966, going from compact to intermediate by shifting to that yr’s new Fairlane platform. In truth, one reason Meteor did not sell nicely is that Comet was comparably sized yet extra affordable. This is one of the few issues non-divers find out about scuba: to forestall the “bends,” make several stops on the ascent. Whether or not you’ve got already been diving, or whether it remains a persistent daydream for you, we’re here to test your knowledge on all issues scuba. Which is as it should be — scuba diving is taken into account an extreme sport, and it does trigger about thirteen deaths per 100,000 divers.