The sight of the Egypto-Roman fleet crowding down to the narrows with their sails bent on their yards showed that they meant to risk putting to sea, and Octavian embarked on Agrippa's fleet, with picked reinforcements from the legions. For four days the wind blew strongly from the south-west and the blockaded fleet waited for better weather. On the fifth day the wind had fallen, the sea was smooth and the sun shone brightly. The floating castles of Antony's van division worked out of the straits, and after them in long procession came the rest of the Roman, Phœnician, and Egyptian galleys.
From the hills to the northward of the straits, from the low-lying headland of Actium to the south, two armies, each of a hundred thousand men, watched the spectacle, and waited anxiously for the sight of the coming battle.
The Western fleet had steered to a position off the entrance formed in two divisions, the one led by Agrippa, the other by Octavian. Agrippa, whose experience and record of naval victory gave him the executive command, had no intention of risking his small ships in the narrows, where they would have been opposed by an equal number of heavier ships, more numerously manned, and would lose whatever advantage their superior handiness and seaworthiness gave them, through having no room to manœuvre. He kept his fleet of four hundred triremes sufficiently far from the shore to avoid the shelving shallows that fringe it near the entrance to the straits, and to have ample sea-room.
roman warships
After the paintings found at Pompeii
For some time the fleets remained in presence of each other, both hesitating to begin the attack. Antony knew that his slower and heavier ships would have the best chance acting inshore and on the defensive, and Agrippa was, on the other hand, anxious not to engage until he could lure them out seaward, where his light craft would have all the gain of rapid manœuvring.
It was not till near noon that at last the Western fleet closed with the Allies. The ships that first encountered were nearly all Roman vessels, for the Egyptian and Asiatic squadrons were not in the front line of Antony's fleet, and the brunt of the attack fell upon the sluggish giants that had been so elaborately fortified with booms in the water and towers and breastworks on their decks. As the attacking ships came into range, arrows, javelins, and stones flew hurtling through the air from the line of floating castles, missiles that did not, however, inflict much loss, for the men on the decks of the attacking fleet crouched behind bulwarks or covered themselves with their oblong shields, and their bowmen made some show of reply to the heavier discharge of engines of war on Antony's ships and to the more rapid shooting of the Asiatic archers. The days were still far off when sea fights would be decided by "fire," in the sense of the discharge of projectiles.
Could the tall ships have rammed the smaller and lower galleys of Octavian and Agrippa they would certainly have sent them to the bottom—a sunken ship for each blow of the brazen beak. But attempts at ramming were soon found by Antony's captains to be both useless and dangerous. It was not merely that their lighter and nimbler opponents easily avoided the onset. The well-trained crews evaded every attempt to run them down or grapple them, chose their own distance as they hovered round their huge adversaries, and presently as they gained confidence from impunity, began successfully to practise the manœuvre of eluding the ram, and using their own bows, not for a blow against the hull of the heavier ship, but to sweep away and shatter her long oars, that were too heavy to be saved by drawing them in or unshipping them. Successful attack on the oars was equivalent to disabling an adversary's engines in a modern sea-fight. And when a ship was thus crippled, her opponents could choose their own time to concentrate several of their ships for a joint attempt to take her by boarding.
The unwieldy ships of Antony's first line, with their half-trained and untrained crews, must have formed a straggling irregular line with large intervals as they stood out to sea, and it was this that gave Octavian's fleet the opportunity for the worrying tactics they adopted. Had the Egyptian and Phœnician ships come to the support of the leading line, their more sailor-like crews might have helped to turn the scale against Octavian. But while the fight was yet undecided and before the Egyptian squadron had taken any part in it, a breeze sprang up from the land, blowing from the north-east. Then, to the dismay of Antony's veterans who watched the battle from the headland of Actium, it was seen that the Egyptians were unfurling their sails from the long yards. The signal had been given from Cleopatra's stately vessel, which as the battle began had rowed out to a position in the midst of the Egyptian squadron, and now shook out her purple sails to the breeze, silken fabrics of fiery red, that seemed at first glance like a battle-signal. But in battle sails were never used and ships trusted entirely to the oar, so to set the sails meant plainly that the fight was to be abandoned.