All 18 Uses of

critical

in

Moby Dick

Whereas, some merchant ships crossing each other's wake in the mid-Atlantic, will oftentimes pass on without so much as a single word of recognition, mutually cutting each other on the high seas, like a brace of dandies in Broadway; and all the time indulging, perhaps, in finical criticism upon each other's rig.†
Chpt 52-54 *

criticism = the act of finding fault and telling others; or a description of faults

For, thought Starbuck, I am here in this critical ocean to kill whales for my living, and not to be killed by them for theirs; and that hundreds of men had been so killed Starbuck well knew.†
Chpt 25-27

If, then, to meanest mariners, and renegades and castaways, I shall hereafter ascribe high qualities, though dark; weave round them tragic graces; if even the most mournful, perchance the most abased, among them all, shall at times lift himself to the exalted mounts; if I shall touch that workman's arm with some ethereal light; if I shall spread a rainbow over his disastrous set of sun; then against all mortal critics bear me out in it, thou Just Spirit of Equality, which hast spread one royal mantle of humanity over all my kind!†
Chpt 25-27

But at this critical instant a sudden exclamation was heard that took every eye from the whale.†
Chpt 46-48

Now the advent of these outlandish strangers at such a critical instant as the lowering of the boats from the deck, this had not unreasonably awakened a sort of superstitious amazement in some of the ship's company; but Archy's fancied discovery having some time previous got abroad among them, though indeed not credited then, this had in some small measure prepared them for the event.†
Chpt 46-48

But this was against all rule; for the oarsmen must put out their eyes, and ram a skewer through their necks; usage pronouncing that they must have no organs but ears, and no limbs but arms, in these critical moments.†
Chpt 46-48

Considering, therefore, that squalls and capsizings in the water and consequent bivouacks on the deep, were matters of common occurrence in this kind of life; considering that at the superlatively critical instant of going on to the whale I must resign my life into the hands of him who steered the boat—oftentimes a fellow who at that very moment is in his impetuousness upon the point of scuttling the craft with his own frantic stampings; considering that the particular disaster to our own particular boat was chiefly to be imputed to Starbuck'†
Chpt 49-51

Nevertheless there have occurred instances, well authenticated ones too, where the captain has been known for an uncommonly critical moment or two, in a sudden squall say—to seize hold of the nearest oarsman's hair, and hold on there like grim death.†
Chpt 52-54

There is some advantage in this; because these twin-tubs being so small they fit more readily into the boat, and do not strain it so much; whereas, the American tub, nearly three feet in diameter and of proportionate depth, makes a rather bulky freight for a craft whose planks are but one half-inch in thickness; for the bottom of the whale-boat is like critical ice, which will bear up a considerable distributed weight, but not very much of a concentrated one.†
Chpt 58-60

Again, if the dart be successful, then at the second critical instant, that is, when the whale starts to run, the boatheader and harpooneer likewise start to running fore and aft, to the imminent jeopardy of themselves and every one else.†
Chpt 61-63

But this critical act is not always unattended with the saddest and most fatal casualties.†
Chpt 61-63

Bear in mind, too, that under these untoward circumstances he has to cut many feet deep in the flesh; and in that subterraneous manner, without so much as getting one single peep into the ever-contracting gash thus made, he must skilfully steer clear of all adjacent, interdicted parts, and exactly divide the spine at a critical point hard by its insertion into the skull.†
Chpt 70-72

For a few minutes the struggle was intensely critical; for while they still slacked out the tightened line in one direction, and still plied their oars in another, the contending strain threatened to take them under.†
Chpt 73-75

His face was an exceedingly round but sober one; he was dressed in a faded blue woollen frock or shirt, and patched trowsers; and had thus far been dividing his attention between a marlingspike he held in one hand, and a pill-box held in the other, occasionally casting a critical glance at the ivory limbs of the two crippled captains.†
Chpt 100-102

But now that he had apparently made every preparation for death; now that his coffin was proved a good fit, Queequeg suddenly rallied; soon there seemed no need of the carpenter's box: and thereupon, when some expressed their delighted surprise, he, in substance, said, that the cause of his sudden convalescence was this;—at a critical moment, he had just recalled a little duty ashore, which he was leaving undone; and therefore had changed his mind about dying: he could not die yet, he averred.†
Chpt 109-111

Seizing the boat-knife, he critically reached within—through—and then, without—the rays of steel; dragged in the line beyond, passed it, inboard, to the bowsman, and then, twice sundering the rope near the chocks—dropped the intercepted fagot of steel into the sea; and was all fast again.†
Chpt 133-135

—lowering thy keel among ravening sharks, and followed by them, open-mouthed to the chase; and this the critical third day?†
Chpt 133-135 *

Definitions:

(1) (critical as in: a critical problem)
important, serious, or dangerous
(2) (critical as in: don't be so critical)
finding fault and telling others; or tending to have unfavorable opinions
(3) (critical as in: critical acclaim)
relating to careful analysis or thoughtful judgement of what is good and bad about something -- possibly from people whose job is to share their expert opinions in a given industry