The "M" Class destroyers of WWI: The Grand Fleet's Workhorses...

The M-class family shows how British destroyer construction could expand far beyond a batch of twelve ships.

A quoted range of 3,710 nautical miles at 15 knots makes endurance a major part of the M class's improvement over the L class.

Refuelling interrupts screening, restricts manoeuvre and can force a fleet to accommodate its shortest-ranged escorts.

A comparison with vertical launch systems explains why fuel transfer and ammunition replenishment impose different handling demands.

The Russian fleet's voyage to Tsushima illustrates why navies valued longer range and deeper magazines.

Distributing weapons among small ships still leaves the problem of keeping enough armed vessels on station.

Minion's place in the first war programme illustrates how continued prewar design work enabled rapid expansion.

The armament layout and short hull life show the capabilities and durability compromises of wartime destroyer construction.

Minion protected the battle fleet and Scandinavian convoys even though much of her service brought no direct contact with the enemy.

A failed fuel transfer forced Minion to return, showing why destroyer endurance mattered even when refuelling at sea was possible.

Minion's limited combat record raises a practical question: how should successful defensive presence be judged?

A December 1916 exercise collision left Marmion trying to rescue crews from two fatally damaged ships.

Marmion's escort of Olympic shows how matching a fast liner in difficult seas could damage destroyer machinery.

An unexpected encounter between convoys ended Marmion's career in a collision on 21 October 1917.

Oracle's unsuccessful search for U-52 nevertheless brought help to survivors from the cruiser Nottingham.

Oracle's encounter with U-44 shows how a submarine hunt could end in a close-range ramming attack.

Large submarine sweeps absorbed destroyers that could otherwise protect merchant ships directly.

Orpheus's gunfire near J1 exposed weaknesses in the recognition procedures for surfaced submarines.

Opal's construction photographs prompt an explanation of how propeller flow helps a rudder turn a ship.

Opal's Twelfth Flotilla service at Jutland combined attacks on the enemy with protection of the fleet.

Opal's unsuccessful attack on U-67 shows the limits of using a torpedo's wake to locate a submarine.

A patrol against possible minelayers ended with Opal and another destroyer wrecked while returning in severe weather.

Paladin's service illustrates the sustained capital-ship escort work behind the Grand Fleet's operations.

A counterfactual considers whether galvanized hulls could have kept more M-class destroyers available for later coastal convoy work.

Seven destroyers and two tugs worked to save the torpedoed cruiser Falmouth, only to face another submarine attack.

G9's mistaken torpedo attack led Pasley to ram a friendly submarine, leaving one survivor to be rescued.