> "So during the age of sailing ships the oceans were warmer?" Highly unlikely, because of the many other factors involved, such as a completely different over

> "So during the age of sailing ships the oceans were warmer?" Highly unlikely, because of the many other factors involved, such as a completely different overall climate situation during that time period; A climate not nearly as heavily affected by human actions as the climate of today, to name just one of the most glaringly obvious factors.