Decades ago I used Valiant Enterprises ‘Ramming Speed’ 1/900 scale pentakonters as 1/1200 scale aphract trieres. Since I could now use more cataphract trieres, the models are being converted by filling in the exposed benches with strips of paper. Only 40 to convert….
The scenario was based on the Battle of Salamis (Crete), 306 BCE fought between an Antigonid fleet led by Demetrius and a Ptolemaic fleet led by Ptolemy in person. The main source for the battle is Diodorus.
The units in the game (4 models on a base) represent about 10 ships each. Miniatures are primarily Langton 1:1200 and Navwar 1:1200, with a few Valiant 1:900 and scratch-built ships.
As described in Diodorus, the Antigonid fleet deploys first, and the Ptolemaic fleet second.
This is a very speculative attempt to model a double-hulled ship carrying a siege tower in 1/1200 scale. Demetrius I Poliorcetes or Lysimachus may have used something like this for siege operations against cities in the early 3rd Century BCE. See Chapter 6 of “The Age of Titans” by Murray.
The model uses the hulls of two 1/900 scale Ramming Speed ships by Valiant Enterprises. The tower is 30 meters tall in 1/1200 scale, or about 3/4 of the estimated height of Helepolis.
The 1/1200 scale ancient ships were temporarily re-based for Hail, Agrippa! simply by sticking the old individual bases to cardboard. In order to use the same ships for various game systems, they are being fitted with rare earth magnets. Custom 40 mm x 130 mm magnetic hardboard bases were made by Good Ground LLC. The magnetic material on the bases is intended for transport using steel drawers. Here they are being used upside down so the rare earth magnets on the ships will stick. This allows for variations in the type, number and positions of ships.
[Edit: Since the Good Ground bases are magnetic, a piece of ferrous metal on the bottom of the ship model works as well or better than a rare earth magnet. My recent ships have been built using a small zinc-plated steel washer or a square of tin-plated steel sheet. This is easier and cheaper than the magnets.]