Shortly the Engineer-Commander, his immediate duties at an end for the moment, came up for a breath of fresh air, and fell into step with me on the quarter-deck.
"There you have (so far as the Navy is concerned) the Alpha and the Omega of the coal," he said, motioning with his mittened hand, first toward the retiring colliers, and then, with a sweeping gesture, to where the thickening smoke-columns were beginning to blend in a murky stratum of streaky black above the even lines of the anchored ships.
"All the energy (save only human force, and that stored in food and explosives) of the Fleet comes aboard from its colliers or oilers," he continued; "all that is left of it—after making steam to run the turbines and dynamos, and for working the condensers, cooking, and heating—goes up through the funnels or down through the clinker hoppers."
Then he told me of an incident which had occurred a day or two previously. "Some one came into the wardroom," he said, "and remarked casually that the wireless had just picked up a signal from a ship about to go ashore in the heavy storm then driving outside. 'What is she?' several officers asked with quick concern. 'Only a collier,' was the reply, and everybody, reassured, resumed the reading of their newly arrived papers. 'I was afraid it was a destroyer,' was the only comment any one made.
"That is just to show," said the Engineer-Commander, "how few in a warship (save those of us whose work is the conversion of it into energy) stop to think how vitally important coal really is to us. As a matter of fact, one can easily imagine circumstances in which the loss of a collier would be far more serious than that of a destroyer, cruiser, or even of a battleship."
It will doubtless surprise one not already informed in the matter to know that the average modern battleship lying at anchor and waiting to be ordered to sea may easily consume twenty-five tons of coal a day, which figure will be raised from 50 to 100 per cent. by one or two harbour spins at half or quarter-speed for target practice. The condensers make the greatest demand for coal in a battleship not under steam, with the running of dynamos for the numerous and constantly increasing electrical devices next in order. The galleys where the cooking and baking is done, are third on the list of consumers, with the cheery open grates—which are installed wherever practicable—accounting for the remainder.
The course of the coal from the hold of the collier to where, on the fire-bars, its potential energy is transformed into kinetic power to furnish power for a battleship is an interesting one, though I should not care to follow it quite so closely as did the ring of an officer I met not long ago. Emerging from the hold of a collier after a couple of hours spent there directing sack-filling, he missed a large signet-ring which he had been wearing when he descended into the dusty hole. Search was, of course, out of the question; but, by a lucky chance, he happened to mention his loss to one of the men who had been working in the hold. He, in turn, spoke of it in the mess-decks, which was the only reason that led the stoker, who, three days later at sea, found a shining lump of metal among the clinkers he was raking out to dump, to bring it to the officer in question. The gnarled, ash-pitted lump bore no resemblance to a ring; but a distorted, but still recognisable, section of the seal identified it beyond a doubt. It had been shovelled into a sack of coal, hoisted in the latter to the deck, dumped into a chute, finally to work out of the bottom of a bunker into the stokehold and be thrown under the boilers. A man can make the descent from the deck through an empty bunker to the stokehold without great discomfort, but would hardly survive being shut up in the former for long with the coal.
The speedy coaling of even an eight-knot tramp is almost always desirable; with a warship it may often mean the difference between success and failure. All of the principal navies of the world have given the matter much study and experiment, but down to this day no practicable contrivance has been evolved which will go far toward eliminating the variable human element in coaling. Something can be done with mechanical carriers where a ship can berth alongside high bunkers, but nothing of the kind appears to have been devised that is not too bulky to carry about in either a warship or a collier. The construction of a warship makes it impracticable to have large openings into which coal might be hoisted in bulk from a collier. The American Navy coals its battleships by hoisting that fuel to the decks with huge mechanical "grabs," but, according to such information as is available to me at this moment, this method (while effecting a saving in labour), does not approach for speed records the British have put up by man-handling the coal at every stage of its transit, except the hoisting.
Since a few minutes' time lost in the putting to sea of the million tons or so of warships which the British hold in leash against any sally in force of the German Fleet might easily be enough to spoil the chance of a decisive engagement, quick coaling has perhaps been given more attention in the Grand Fleet since the war than at any other time in the history of the British Navy. The time in which the various classes of ships can put to sea after receiving orders varies in different emergencies, and is hardly a proper topic of discussion in any detail. The coal in the bunkers of no ship is allowed to fall below a very high fixed minimum at any time, and even ships on special missions at sea always have enough in hand to allow them to reach and play a vigorous if tardy part in any conceivable kind of a general engagement that may ensue. The pursuance of this policy is responsible for the frequent and speedy coalings which are so much a feature of the regular "grind" at the Northern Base.
A ship may coal at any hour of the day or night—especially if she is just in from the sea and there appears to be a chance of her being called upon to put out again on short notice—but the usual time is the morning. Barrows and sacks are brought out, and such other preparations as practicable are made the night before. Breakfast is served at an early hour, every one—officers and men—coming down to it in their "coaling togs." The latter may be any old kind of a rig-out calculated to keep the coal-dust from penetrating to a minimum section of the hide of the wearer. A one-piece overall is a favourite garment with both men and officers, and a white summer cap-cover—worn like a cook's head-dress—serves a useful purpose in keeping the dust out of the hair. A layer of vaseline about the eyes makes it easier to remove the dust with soap and water after coaling, and a failure to take this precaution leaves one with the make-up of a moving-picture villain for two or three days. Practically all of the officers, with the exception of the paymasters and medical staff, have duties in connexion with coaling. Ordinarily, these are confined to directing various stages of the operation, but occasionally—perhaps to stimulate action when speedy work is desirable, or for the sheer exhilaration of exercise—one will take a spell with a shovel or barrow. On several ships of the Grand Fleet the Padre is one of the most useful "coalers."