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WWI Mediterranean Scenario Generator

Two era generators for tabletop play in the Mediterranean, 1914–1918. All distances are in yards. Play starts at the moment a submarine is spotted or a ship is hit by a torpedo.

Set Year and Season on both generators. Use Randomise Force to pick a historically weighted year, season, sector, cargo group and enemy boat. Use Search Destroyer Flotilla to draw a named Allied flotilla that actually worked that sector in that year.

Generator A — Early War (1914–1916): Independent Sail

Independent steamers, weak ASW, and a single boat. Destroyer cover, if any, is a patrol or a search flotilla, not a formed convoy screen. Greece is not yet an Allied escort navy. Japan is not yet in the Mediterranean.

Options (1914–1916)

Year 1914 1915 1916 Season Spring (March–May) Summer (June–August) Autumn (September–November) Winter (December–February) Area / Route Ionian approaches Aegean coastal Malta–Gibraltar lane Merchant Count 2 ships 3 ships 4 ships Defensive Armament None (typical 1914) Light (1×3–4in on 1 ship) Some (2 ships light guns) Q-ship Present? No Yes (hidden) Local ASW Cover None Armed trawler / drifter Torpedo boat / sloop Search Flotilla Nation Any power in this sector Britain France Italy (from 1915) Destroyers from the flotilla None on table 1 DD 2 DD 3 DD Submarine Nationality Austro-Hungarian German Opening Let the generator choose Periscope spotted Boat spotted on the surface Ship just hit by a torpedo Time of Day Day Dusk / Dawn Night Weather Clear Mist Squall Moonlit Night Moonless Night / Fog Storm Gale Seed (optional)

Randomise Force Search Destroyer Flotilla Generate Copy Download .txt Download Word Download PDF

Scenario Output

Generator B — Convoy Era (1917–1918)

Formed convoys from mid-1917. Escorts may be British, French, Italian, Greek (from July 1917) or Japanese (2nd Special Squadron at Malta from April 1917). Search flotillas are drawn from the power that actually worked that route.

Options (1917–1918)

Year 1917 1918 Season Spring (March–May) Summer (June–August) Autumn (September–November) Winter (December–February) Preferred Escort Nation Any power in this sector Japan (2nd Special Squadron) Britain (Royal Navy) France (Marine Nationale) Italy (Regia Marina) Greece (Hellenic Navy) Scenario Type Convoy under threat ASW patrol sweep Ambush at first light Route Alexandria → Taranto Alexandria → Marseille Salonika → Southern Italy Aegean coastal (island hops) Convoy Size Small (3–4) Medium (5–7) Large (8–10) Escorts (destroyers) 2 DD 3 DD 4 DD Submarines 1 boat 2 boats Enemy Nationality Mixed (German / A-H) German only Austro-Hungarian only

Armed Merchantmen None Some (about 25%) Many (about 50%) Add Bait Merchant (SWEEP) No Yes (armed decoy / troopship) Opening Let the generator choose Periscope spotted Boat spotted on the surface Ship just hit by a torpedo

Time of Day Day Dusk / Dawn Night Weather Clear Mist Squall Moonlit Night Moonless Night / Fog Storm Gale Seed (optional)

Randomise Force Search Destroyer Flotilla Generate Copy Download .txt Download Word Download PDF

Scenario Output

Notes on what the generator will and will not do

• Japan only appears from April 1917. The 15th Division (Momo-class) only appears from August 1917.
• Greece only appears as an escort navy from July 1917.
• Italy only appears from May 1915.
• All distances are in yards. Convert to your own table scale.
• Opening ranges follow wartime practice: periscopes inside about 2,000 yards; torpedoes often fired inside 1,200 yards; a hit puts the boat nearby, not over the horizon.
• Download Word makes a .doc file that opens in Word or LibreOffice. Download PDF needs the page to reach the html2pdf script on the network.

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