Pump

A concretion with what is thought to be the bottom of a ship's pump was found during the 2001 field season.  It was displaced and its shape is not easily understandable.  It is asymmetrical and its lower sides show the imprint of wood grain.

Given the fact that we have found the pump sump carved on the lower portion of the hull, between floor timber C21 and C22, it seems that the pump shaft was displaced and its lead bottom involved in the iron concretion that formed on the bottom of the hull after the collapse of some of some of its inner structure, such as a bulkhead or the walls of the pump well.  The concretion involving the bottom of the pump is trapezoidal in shape and bears the marks of wood grain on both sides, suggesting that it was formed between two collapsed planks.

Fig. 55 - Pump sump (photo: Augusto Salgado).

Fig. 56 - Concretion of the pump (photo: Filipe Castro).

Fig.57 - Another view of the concretion of the pump (photo: Filipe Castro).