Niccolò da Conti in relating his movements in Asia somewhere in the range of 1419 and 1444, portrays enormous trashes of around 2,000 tons in weight: junkbobby
They fabricate a few ships a lot bigger than our own, fit for containing 2,000 tons in size, with five sails and as numerous poles. The lower part is built with of three boards, to withstand the power of the storm to which they are highly uncovered. In any case, a few boats are inherent compartments, that should one section is broken, the other segment staying unblemished to achieve the voyage.
Additionally, in 1456, the Fra Mauro map depicted the presence of trashes in the Indian Ocean just as their development:
The boats called throws out (lit. “Zonchi”) that explore these oceans convey four poles or more, some of which can be raised or brought down, and have 40 to 60 lodges for the dealers and just one turner. They can explore without a compass, since they have a celestial prophet, who remains as an afterthought and, with an astrolabe close by, provides requests to the pilot.
— Text from the Fra Mauro map, 09-P25, 
Fra Mauro further clarifies that one of these throws out adjusted the Cape of Good Hope and went far into the Atlantic Ocean, in 1420:
About the time of Our Lord 1420 a boat, what is called an Indian Zoncho, on an intersection of the Sea of India towards the “Isle of Men and Women”, was redirected past the “Cape of Diab” (Shown as the Cape of Good Hope on the guide), through the “Green Isles” (lit. “isole uerde”, Cabo Verde Islands), out into the “Ocean of Darkness” (Atlantic Ocean) on a way west and southwest. Only air and water was seen for 40 days and by their retribution they ran 2,000 miles and fortune abandoned them. At the point when the pressure of the climate had died down they made the re-visitation of the said “Cape of Diab” in 70 days and gravitating toward to the shore to supply their needs the mariners saw the egg of a bird called roc, which egg is just about as large as an amphora.
— Text from Fra Mauro map, 10-A13,