Red Seal ships usually ranged in size between 500 and 750 tons, a size equal or superior to European galleons, but inferior to that of the massive Portuguese carracks, often over 1,000 tons. A galleon was a large multi-decked Sailing ship used primarily by the nations of Europe from the 16th to 18th centuries A carrack or nau was a three- or four- masted Sailing ship developed in the Atlantic Ocean in the 15th century by the Portuguese
The complement was about 200 people per ship (the average of the fifteen Red Seal ships for which the number of people is known, is 236).
The ships were built in various places. Some of them, built in Nagasaki, combined Western, Japanese and Chinese ship designs. ( is the Capital and the largest city of Nagasaki Prefecture in Japan. Others were Chinese junks. And once the trade with Southeast Asia became well established, numerous ships were ordered and purchased in Ayutthaya in Siam, due to the excellence of the construction and the quality of Thai wood. Ayutthaya (full name Phra Nakhon Si Ayutthaya, พระนครศรีอยุธยา aˡjutʰajaː also spelled "Ayudhya" city is the capital of
The ships were managed by rich trading families such as the Sumikura, Araki, Chaya and Sueyoshi, or by individual adventurers such as Suetsugo Heizo, Yamada Nagamasa, William Adams, Jan Joosten or Murayama Toan. Yamada Nagamasa ( Japanese: 山田長政 Yamada Nagamasa; 1590&mdash1630 was a Japanese adventurer who gained considerable influence in Thailand For other people called William Adams see William Adams. Early life Adams was born in Gillingham, Kent, England Jan Joosten van Lodensteijn (c 1560 – 1623 or simply Jan Joosten, was a native of Delft and one of the first Dutchmen in Japan, arriving The funds for the purchase of merchandise in Asia were loaned to the managers of the expedition for an interest of 35% to 55% per trip, going as high as 100% in the case of Siam.