Old Dutch ships

Thanks to Carl Stapel's research, we know dimensions for some pretty old Dutch warships. For the ship that have both lasts and dimensions, I calculated the factor. The formula for calculating lasts is as follows:

Lasts = length x beam x hold / K

This is the list:

Adm Ship      Captain                Built Size     K     Length Beam     Hold
A   Dolfijn   Marten Zegersz.        1593  125lasts 243.8 100ft  26-1/2ft 11-1/2ft
A   Kraan     Cornelis van Grieken                         90ft  25ft     12ft
A   Neptunus  unknown                1593  250lasts 183.5 102ft  33ft     13-1/2ft
A   Utrecht   unknown         listed 1607                  90ft  27-1/4ft 11ft
Z   Neptunus  unknown                1596* 200lasts        62ft? 27ft     

Sources:

1. Carl Stapel, personal communication "a ship from 1593", 2005.
2. Carl Stapel, unpublished manuscript "Neptunus", 2005.
3. Carl Stapel, unpublished manuscript "Vlootlijst Gibraltar 25 april 1607", 2006.