By keeping a diary and accurate logbooks, he and his teams were able to determine wind drifts, prepare maps, and obtain considerable information about the continent of Antarctica.
Dengan menulis buku harian dan buku catatan pelayaran yang akurat, ia dan rekan - rekannya sanggup menentukan pergerakan angin, mempersiapkan peta, dan memperoleh cukup informasi mengenai Benua Antartika.