Question: Following the Treaty of Versailles,  how many German ships were supposed to be used for merchant use after disarming?
About the article "Treaty of Versailles", section "Military restrictions".

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The merchant vessel "Steiermark" was constructed by Friedrich Krupp Germaniawerft in Kiel for the Hamburg-Amerika Line.
Launched in 1938, the ship was to operate on the East Asia run, but had only completed sea trials when war was declared.
Following World War I, German naval power had limits placed upon it by the Treaty of Versailles, which were later eased by the 1935 Anglo-German Naval Agreement.
By the 1930s, the discrepancy between the conventional warship strength of the "Kriegsmarine" and that of other nations led the German military to recognise auxiliary cruisers engaged in commerce raiding would play a significant role in any future war, as they had during World War I.
Merchant ships that could be converted into raiders were identified, and were to be taken up by the "Kriegsmarine" for conversion following a declaration of war.
"Steiermark" was one of these ships.
Receiving the designation "Schiff 41" (Ship 41) for administrative purposes, she was taken into dockyard hands following the outbreak of World War II.
Conversion of the merchant ship commenced in early 1940, and was prioritised as second only to work on the U-boat fleet.
The conversion work included installation of camouflaged weapons, fitting of bunks for the sailors, creation of internal passageways leading to their stations.
Prisoner accommodation, consisting of an open area for hammocks and facilities to keep ship's masters and women separate from the general population, was constructed.
The raider was also provided with equipment with which to modify her appearance and allow her to masquerade as other merchant vessels.
While the ship was being refitted, her future crew underwent training aboard the blockade runner "Monte Pascoal".
"Korvettenkapitän" (Commander) Theodor Detmers was selected to command "Schiff 41" in July 1940; the 37-year-old was the youngest man to command a German merchant raider.
Detmers named the ship "Kormoran", inspired by (a Russian merchant ship captured by the Germans during World War I and operated as a raider) and the cormorant (with Detmers comparing the seabird's use in fishing to his ship's attempts in catching Allied vessels).
After a successful trials cruise in September 1940, "Kormoran" was commissioned on 9 October. 
A tragically-notable ship to be associated with the town, the Cunard passenger liner , was sunk by a German U-boat off the Old Head of Kinsale while en route from the US to Liverpool on 7 May 1915.
1,198 passengers died, while 700 were rescued.
The survivors and the dead alike were brought to Cobh, and the bodies of over 100 who perished in the disaster lie buried in the Old Church Cemetery just north of the town.
The Lusitania Peace Memorial is located in Casement Square, opposite the arched building housing the Cobh Library and Courthouse.
During World War I, Queenstown was a naval base for British and American destroyers operating against the U-boats that preyed upon Allied merchant shipping.
Q-ships (heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks) were called Q-ships precisely because many were, in fact, fitted-out in Queenstown.
The first division of American destroyers arrived in May 1917, and the sailors who served on those vessels were the first American servicemen to see combat duty in the war.
When that first convoy arrived in port after enduring a rough passage in what were little more than open boats, its members were met by a crowd of sailors and townspeople, thankful for their anticipated help towards stopping the U-boats that were blockading western Europe.
The British Commodore present met the captain of the American flagship, jumping onto the dock and asking how soon the weather-beaten American ships could be put to use.
"We're ready now, sir!"
was the widely-quoted answer from the American.
Due to its tactical military importance, under the terms of the 1921 Anglo-Irish Treaty the port remained a UK sovereign base.
Along with the other Treaty Ports it was handed over to the government of the Irish Free State in 1938. 
After the war's end, Brazil participated in the Versailles Peace Conference, with a delegation led by future president Epitácio Pessoa.
Brazil was also a founder of the League of Nations after the end of the war.
Upon returning to Brazil, the Naval Division (DNOG) was dissolved on June 25, 1919, having complied fully with its entrusted mission.
The Treaty of Versailles allowed Brazil to keep over 70 ships that it had seized from the Central Powers during the war, and which were then incorporated into the Brazilian merchant fleet.
Brazil was also financially compensated by Germany for the lost coffee shipments and ships that were sunk by German U-boats during the war.
From an economic point of view, although exports of latex and coffee fell sharply at first, creating a crisis in the economy, as the conflict continued, Brazil eventually began to find good trading opportunities.
Increased international demand for foodstuffs and raw materials forced the country to change its economic structure away from the predominant agriculture.
It was then that Brazil underwent unprecedented industrial development, also making use of immigrant labour, composed largely of Europeans initially fleeing famine and then the war.
The number of factories quadrupled in the war years, doubling the number of workers.
Brazil decreased the number of imported items, changing the country's socioeconomic face. 
Initially ordered as "Panzerschiffe", the three "Deutschland"-class ships were designed to meet the limitations imposed on the German Navy by the Treaty of Versailles.
The treaty limited large German warships to a displacement of , but did not restrict the caliber of main battery guns.
Several innovations were incorporated into the design, including extensive use of welding and all-diesel propulsion, which saved weight and allowed for the heavier main armament and armor.
Nevertheless, the ships exceeded the weight restriction by several thousand tons, though the German Navy claimed the vessels were within the limitations.
The three ships, "Deutschland", "Admiral Scheer", and "Admiral Graf Spee", were built between 1929 and 1936.
Design changes were made over the course of the construction program, resulting in slightly differing characteristics of each ship.
Commonly referred to as "pocket battleships" due to their heavy armament, all three ships saw service in the non-intervention patrols during the Spanish Civil War in 1936–1938.
They served as commerce raiders early in World War II; "Admiral Graf Spee" was scuttled outside Montevideo in December 1939 following the Battle of the River Plate.
"Deutschland" conducted one cruise into the North Atlantic without significant success, before returning to Germany to be renamed "Lützow".
She and "Admiral Scheer" were also re-rated as heavy cruisers.
She then participated in Operation Weserübung, where she was badly damaged by Norwegian coastal batteries and a British torpedo.
After repairs, she was deployed to occupied Norway to operate against convoys to the Soviet Union.
There she was joined by "Admiral Scheer", which had completed the most successful raiding cruise conducted by a major surface unit.
Both ships ultimately returned to German waters by the end of 1943, where they were sunk by British bombers in the final weeks of the war.
"Lützow" was re-floated by the Soviet Navy and expended as a target in July 1947. 
Through the period from the armistice on 11 November 1918 until the signing of the peace treaty with Germany on 28 June 1919, the Allies maintained the naval blockade of Germany that had begun during the war.
As Germany was dependent on imports, it is estimated that 523,000 civilians had lost their lives.
N. P. Howard, of the University of Sheffield, claims that a further quarter of a million more died from disease or starvation in the eight-month period following the conclusion of the conflict.
The continuation of the blockade after the fighting ended, as author Robert Leckie wrote in "Delivered From Evil", did much to "torment the Germans ... driving them with the fury of despair into the arms of the devil."
The terms of the Armistice did allow food to be shipped into Germany, but the Allies required that Germany provide the means (the shipping) to do so.
The German government was required to use its gold reserves, being unable to secure a loan from the United States.
Historian Sally Marks claims that while "Allied warships remained in place against a possible resumption of hostilities, the Allies offered food and medicine after the armistice, but Germany refused to allow its ships to carry supplies".
Further, Marks states that despite the problems facing the Allies, from the German government, "Allied food shipments arrived in Allied ships before the charge made at Versailles".
This position is also supported by Elisabeth Gläser who notes that an Allied task force, to help feed the German population, was established in early 1919 and that by May 1919 " Germany became the chief recipient of American and Allied food shipments".
Gläser further claims that during the early months of 1919, while the main relief effort was being planned, France provided food shipments to Bavaria and the Rhineland.
She further claims that the German government delayed the relief effort by refusing to surrender their merchant fleet to the Allies.
Finally, she concludes that "the very success of the relief effort had in effect deprived the [Allies of a credible threat to induce Germany to sign the Treaty of Versailles.
However, it is also the case that for eight months following the end of hostilities, the blockade was continually in place, with some estimates that a further 100,000 casualties among German civilians to starvation were caused, on top of the hundreds of thousands which already had occurred.
Food shipments, furthermore, had been entirely dependent on Allied goodwill, causing at least in part the post-hostilities irregularity.