The oarports of this kit are shown in this box picture. But this oarport arrangement is not shown in other materials. Therefore I decided to modify the position of the oarports according to the picture of Resin Kit of Andrea Miniatures' Roman Bireme. (See the photograph of April 23rd at the page of Details.)

I thought the projections that run along both sides from the bow to stern are outriggers and I made the ports at the projections as mentioned above. However, my thought might be wrong.
I found the descriptions concerning about the projections and oars in reference 4, in August.

The light units that Roman writers refer to as biremes must therefore be liburnians.
----------------------
The liburnian is a small, aphract galley with no outrigger; the upper oars are worked through a latticed bulwork and the lower through ports just bellow the gunwale.

Ships in many cases were still fitted with projections that run along either side from the bow to the steering oar and look very much like a rowing frame, but these house no oars - the oars are consistently shown emerging from the side of the hull below the projections.
----------------------
We can only guess at its purpose. Perhaps, it served as a massive bumper to shield the oarsmen.
----------------------
it was a convenient jump-off point for marines preparing to board.

After various considerations, I decided to rebuild the oarports following the kit instruction.
Before that, I inserted the oars into the oarports at the projection as shown in the left photograph. Although this arrangement may be wrong, I think that this is cooler than the box picture.

The printed sheet of the patterns in the kit is shown in this photograph.

CORVUS, a sort of crane, used by C. Duilius against the Carthaginian fleet in the battle fought off Mylae, in Sicily (B.C. 260). The Romans, we are told, being unused to the sea, saw that their only chance of victory was by bringing a sea-fight to resemble one on land. For this purpose they invented a machine, of which Polybius has left a minute, although not very perspicuous, description.
In the fore part of the ship a round pole was fixed perpendicularly, twenty-four feet in height and about nine inches in diameter; at the top of this was a pivot, upon which a ladder was set, thirty-six feet in length and four in breadth. The ladder was guarded by cross-beams, fastened to the upright pole by a ring of wood, which turned with the pivot above. Along the ladder a rope was passed, one end of which took hold of the corvus by means of a ring. The corvus itself was a strong piece of iron, with a pike at the end, which was raised or lowered by drawing in or letting out the rope. When an enemy's ship drew near, the machine was turned outwards, by means of the pivot, in the direction of the assailant. Another part of the machine which Polybius has not clearly described is a breastwork, let down from the ladder, and serving as a bridge, on which to board the enemy's vessel. By means of these cranes the Carthaginian ships were either broken or closely locked with the Roman, and Duilius gained a complete victory.

Thirty-six feet in length is too long for my corvus. I think that the corvus described by Polybius (Polybius of Megalopolis : Greek historian) was equiped on bigger galleys than mine. So, I scaled down my corvus.

Since the ships were so low, to give the marines height enough to sweep an enemy's deck, collapsible towers, which could be swiftly set up or dismantled, were carried fore and aft.

Towers erected on merchantmen are reported as early as the 5th B.C.. The first recorded use in a strictly naval action was at the Battle of Chios in 201 B.C.. Eudamus, admiral of Rhodian contingent that fought Hannnibal's powerful fleet in 190B.C., had turrets on his flagship, which was a "four". When Crassus besiedged Rhodes in 43 B.C., he equipped his ships with "collapsible towers, which were then set up".

By the way, the tower seems to be built of brick. It is strange that the brick tower should be on a ship.
So, I tried to investigate whether this wall pattern was correct or not. Then I found a photograph of the relief which had been found at Praeneste and now in the Vatican Museum, in reference 4. The tower wall of this relief seems to be built of brick.
I suppose that the brick pattern was painted on the wooden wall. I am determined to paint brick pattern on my tower.
This drawing is made by my tracing of the illustration 130 in reference 4.

The sailcloth in the kit are shown in this photograph. I do not like these printed black lines. So I made the sails of a bed sheet by myself.

I made the wooden anchor with lead stock based on the illustration 185 in reference 4. This anchor is from 1st half of 1st A.D.. The arms and the shank were held together by a lead collar.