Showing posts with label SEANARIO. Show all posts
Showing posts with label SEANARIO. Show all posts

Friday, 25 September 2015

LINES VERSUS COLUMNS

Napoleonics, Wars of the Revolution, Renaissance cavalry, Macedonians or Thebans. Whether it is ships, horses or men there is a possibility to arrange them in columns or lines.

The advantage with a column is that it focusses effort at a specific point and also that it is an easier formation for manoeuvre. It is just follow my leader. The column must be led as a whole, however, or the tail can decide to depart while the head takes the strain.
 

The line, however produces a distributed application of force along a front which the enemy must withstand at all points or be engulfed. On the other hand, the elements of the line should be marshalled carefully to maintain a common front or else the formation goes to pieces.

A column will always have a percentage of forces unable to act against the enemy because they have friends in the way, whereas a line uses all its strength so long as they come up against enemies.

Salamis is the Mastadon of ancient sea battles in the age of the trieres. So many ships packed into a small space. A space that funnels the opponents into each other and hinders their escape. The battle that was a long slogging match with a tangled mess of ships fighting a struggle of attrition.
Recived wisdom is that the narrow straits limited the scope for tactics on each side and two masses of ships, the total number of vessels cited by ancient sources must be involved, smashed into each other.
On your marks ! Get set ! ........FIGHT
But is it ?

The most obvious constraint on the battle is the width of the strait. At various points the width from mainland to Salamis is circa 1500 metres. Further up the strait it is split around the island St Georgios and the smaller rocks off the Perama shore. It is easy to fall into the trap of allotting ships to this distance, dividing this number into the total for each side and thus achieve a calculated number of ranks. Calculated from ancient data ... must be true...?

Æschylus and Herodotos both imply the Persians made an offensive move against the Greeks. In any case, the Persian fleet moves from 'between Ceos and Mynichia' to a place inside the strait where the battle took place.

The Greeks had to assemble their battle line before the Persians arrived. They had to launch beached ships and take up anchors and form in their units. They then may have backed water for a while before contact was made.

There is thus no discussion that both fleets moved around a bit. The Persians advanced at least 2 and up tp 4 kilometres - mostly in dark, half-light or mist. The Greeks had to assemble their forces from being beached, advance up tp 3 kilometres and back maybe 1 kilometre before fighting.

The obvious question is, 'column or line?'.  After the above calculation, lines dominate consideration of the battle but if 1600 galleys are to move about in concert are lines a practicable proposition ?
Perfect! ..oh, but they are at anchor in a calm ...

Add to this, the fact that the Persians are moving in the dark or half-light !!!! How on earth could a line be kept in such circumstances ?  The Persians patrolled the entrances to the strait all night - this can not have been in lines. If they tried to maintain station it would be a disaster. They must have rowed - probably at a minimum rate - in columns - probably following a lantern on the stern of the previous ship, to and fro.

My point is that a line of many ships - galleys - needs control to be maintained as any kind of regular formation. Progressing at speed, across disturbed water or around obstacles, or in the dark will lead to a disintegration of the formation ergo the Persian ships were in columns at least as they approached the scene of battle.
"It's Fairyland!" ..Moving in line ahead...

Tuesday, 22 September 2015

SALAMIS : MAPS

Easier said than done to get a good map of Salamis battle area.
How reliable is this  re. 480BC ?
 1) Sea level changes. Oft-quoted figure is a relative sea-level rise of 1 fathom since 'antiquity'. As a geologist I am aware this is a debateable figure. Greece is a tectonically active part of the world which means we have to add rising or sinking land-masses.
One calculation of eustatic sea level change - Salamis in red
The site of the battle of Marathon, for example, should by rights, be flooded by now according to the eustatic sea-level change curve ( a kind of base-line for world sea-level changes). BUT because the land has been pushed up at about the same rate then the coastal situation remains similar to what it was 2500 years ago...REF. This means we can never know the exact coastline from 480BC but we must try to get an idea..
Did the sea come up or the land go down ?
2) Human activity in this area where the Greek navy has its main base, there has been unbridled summer-house development and where the recently greatest maritime nation has its main port is unbelievable. One island - Psyttaleia - has become Europe's largest sewage treatment plant and the mainland coastline is obscured by reclaimed ground.

One thing that can be said is that the sea-level change is not catastrophic. A breakwater from antiquity by the ancient Salamis port in Amboulaki bay is still visible in the water rather than high and dry or a long way off the shore-line.


Just to be cruel, the gods have given us a different alphabet from the Greeks so simple web  searches also become more problematic.

Maritime charts are a good and accurate bet, adding depth date - but also including, very accurately all made-ground and obstacles. I want this stuff cleaned off...

Kinosura peninsula complete with deep-water mooring for giant ships and Perama port installation in background.
The solution so far is to use eighteenth century French maps ! These seem to be a good match with sattelite maps and fotos and the engineering tecnicians who supported French fortification science seem to have done a good job with naval charts from the time.

Barbier du Bocage's map of 1785 gives a nice base map.
Notice the north-pointer is the Fleur de Lys..the map was drawn just a few years before Le Revolution.
 Until things obviously awry I will use this base map plus modern depth information.

SALAMIS seanarios


Condensing the possibilities these are the main variants for Salamis.

Next step is to work out which ones give the most enjoyable fights!

Thursday, 26 September 2013

Kyzikos Seanario

First part of Seanario for Battle of Kyzikos.

Draft version.

Tuesday, 17 September 2013

Toil and Trouble

Phew...put together a first draft of seanario for Cynossema, Available as pdf download by clicking on link to left.
Use back button to get back here. (As if you wanted to ?)
Cynossema clash...

Thursday, 12 September 2013

SEAnario1

CYNOSSEMA : SeaNARIO
SEASCAPE
Using Hotz ships scaled down to 66% of their 1/300 size and a ground scale of 1/500.
Figures 6mm with one paper element standing for c. 5 men or 1:1 if desired.

THE OPPOSING SIDES

PELEPONNESIANS

86 ships in 3 divisions as follows:

16 ships from previous summer
Mindarus' squadron of 55 including some Syracusans
One division of faster ships

left (Mindarus) 25 fast ships

right (Syracusans) 25 ships : can either be with reinforced bows or not

centre 36 ships


ATHENIANS

76 ships in 3 divisions as follows

Thrasylus' left wing – 25 ships

Thrasybulus right wing – 26 ships

Centre – 25 ships

PROCEDURE

The battle is fought as three separate engagements which influence each other.

The number of ships required is just about 1/3 of the original number but the game is actually played with a 1 for 1 representation of ships.

Wednesday, 11 September 2013

CYNOSSEMA : PHASE 4

Now the Athenians saw the moment to use their superior seamanship when and where it could count.

The Peleponnesian left  were following the Athenian right but unable to catch them. When they had enough sea room and perhapss saw their pursuers tiring or falling into disorder, the Athenians turned on them.

The Athenian centre squadron had beacked onto shore and abandoned their ships. They were followed up onto land by the crews of the Peleponnesian centre and some sort of scrappy land battle developed.

The Athenian left held their own against the Syracusans - maybe seeking some revenge for the Sicilian debacle.

Now it was the Athenians who delivered the periplous on the Peleponnesians! They turned to port and came round onto the rear of the enemy fleet. The Peleponnesian left and centre were disordered and caught at a disadvantage, the perfect situation for effective ram attacks.


It may be significant that this manouvre was executed by the Athenian commander, Thrasybulus, maybe with his best ships against the Peleponnesian commander with his fastest ships. Putting the enemy commander out of the fight - Alexander style - may have contributed a lot to the loss of heart by the Peleponnesian fleet who had already had success in routing the Athenian centre.

Many of the Peleponnesian fleet simply fled before the Athenians as their battle line was rolled-up. They fled north to Abydos or to take refuge in the mouth of the river Midius. The Athenians lost 15 ships and the Peleponnesian fleet, 21 ships. Being outnumbered, and having their centre so severely mauled did not allow the Athenians to take best advantage of their victory but a demonstration that Athens was still supreme at sea was more significant than the casualty list.

CYNOSSEMA: PHASE 3

The battle proper started with the Peleponnesians attempting a periplous with their left.
This was a crucial part of their tactics and for this purpose they had a picked squadron of fast ships to outrun the Athenians who wers till reckoned to be dangerous opponents ship for ship despite the losses of the Sicilian expedition.

The Peleponnesian centre and right just had to drive into their outnumbered opponents and trap them against the coast.

The Athenian left managed to stay off the coast and, though pressed fought on north of Cynossema.

The Athenian centre was driven into shore and severely handled by the Peleponnesian centre.

The Athenian right saved the whole battle for their side. They beat the Peleponnesian's fastest ships off the blocks and outran them to evade the periplous, running before them to avoid their pursuers and keep the whole Athenian fleet from being hemmed into the Hellespont.

CYNOSSEMA PHASE 2

The fleets formed lines to face up to each other at some point. Hard to say where exactly.Probably they never really formed up to face before phase 3 was under way. However, the map shows approximation of the two fleets facing up to each other and shows they stretched over some way.

Thucydides comment that the Peleponnesians reached from Abydos to Dardanus actually fits, more or less.

Both sides hugged their own shore to have one secure flank as they approached. The Athenians had the most hazardous shore with rocks and shallow water.


CYNOSSEMA 1

CYNOSSEMA : ATHENS AT BAY : (Thucydides Book 8, 99ff.)

Having suffered the ignominious disaster of the Sicilian adventure, Athens now had the problem a Peleponnesian fleet operating in the Hellespont which could interfere with supplies from the Black Sea.

An Athenian fleet sailed into the Hellespont to meet the Peleponnesians who were based at Abydos.

The two fleets met at the narrowest area of the Hellespont, near the promontory of Cynossema - headland of the Bitch's  Tomb, where Hecuba, wife of Priam had been buried after she was metamorphosed into a dog and drowned.

The fleets approached in column and when it was obvious they must clash in the narrow waters they both formed their battle line.

(THE FLEETS APPROACH : should be Peleponnesian LEFT  :))

According to Thucydides it was only during the course of the battle that the Athenian left sailed past the promontory, becoming detached from the rest of their fleet as they did so. This means that the two sides initially faced each other some distance to the west.Therefore the Peleponnesians  must have been able to sail past Cynossema with their left (leading) squadron to form a battle line.

The Peleponnesian strategy was to execute a periplous to their left and thus cut the Athenians off from the open sea and trap them in the Hellespont. Thus the 86 Peleponnesians may hope to defeat the 76 Athenians. Simultaneously, a forceful attack in the centre across the narrow waters should lead to the Athenian centre running out of sea-room and going aground or at least falling into confusion on the shores of Cynossema.

The Athenian centre was driven into the coast but the Peleponnesian periplous failed and the Athenian right turned the tables to execute their own periplous on the over-extended  Peleponnesian left.

The Athenian left and Peleponnesian right were engaged north of Cynossema in an equal struggle.

The Athenian right was now able to sweep north and take the Peleponnesians in the flank and rear, especially the centre which had lost order as it rushed to send some troops on land and tried to finish off the disorganised Athenians facing them.

The Peleponnesians broke and fled northward where they could easily find refuge in Abydos and the mouth of the River Midius.

Athens had won a victory against a larger fleet at a crucial time when they desperately needed a filip to counter the Sicilian tragedy.

WARGAME
This battle has many elements which lend themselves to an interesting wargame.
  • Not too many ships involved
  • Confined waters
  • Combat onshore is possible
  • The underdogs win