Device used in connection with ship log based on measurement of the dynamic pressure

Claim 1

A DEVICE IN CONNECTION WITH SHIP LOG BASED ON MEASUREMENT OF THE TRUE VALUES OF THE DYNAMIC PRESSURE IN AVOIDANCE OF ERRORS INTRODUCED BY REDUCTION IN PRESSURE DUE TO THE BOUNDARY LAYER OF WATER WHICH IS DRAGGED ALONG WITH THE SHIP WHEN THE SHIP MOVES THROUGH THE WATER BY REASON OF THE FRICTION AGAINST THE SHIP''S HULL, COMPRISING A SMALL CHAMBER SECURED TO AND EXTENDING OUTSIDE THE ACTUAL SHIP''S HULL BELOW THE WATER LINE AND SITUATED AT THE FOREPART OF THE SHIP, SAID CHAMBER HAVING AN OPENING FOR LETTING IN SEA WATER TURNED MAINLY IN THE NORMAL DIRECTION OF MOVEMENT OF THE SHIP, SAID OPENING BEING SPACED FROM THE SHIP''S HULL A DISTANCE GREATER THAN THE THICKNESS OF THE BOUNDARY LAYER AT THAT LOCATION ON THE SHIP''S HULL SO AS TO BE SUBJECT TO THE TRUE VALUE OF THE DYNAMIC PRESSURE, SAID CHAMBER HAVING ANOTHER OPENING EXTENDING THROUGH THE SHIP''S HULL FOR CONNECTION OF A PIPING FOR TRANSMITTING THE DYNAMIC PRESSURE, AND SAID CHAMBER HAVING AT ITS FORWARD END TWO FLAT WALLS, WHICH FORM AN ANGLE IN THE ORDER OF 90*, THE BISECTIONAL PLANE OF WHICH COINCIDES WITH THE CENTER LONGITUDINAL BULKHEAD OF THE SHIP OR WITH A PLANE, WHICH IS PARALLEL TO THIS BULKHEAD, OR INTERSECTS THE SAME OR ITS EXTENSION ALONG A HORIZONTAL LINE, THE CENTER OF SAID OPENING FOR LETTING IN SEA WATER BEING IN SAID BISECTIONAL PLANE.

Claim 2

A DEVICE IN CONNECTION WITH SHIP LOG BASED ON MEASUREMENT OF THE TRUE VALUES OF THE DYNAMIC PRESSURE IN AVOIDANCE OF ERRORS INTRODUCED BY REDUCTION IN PRESSURE DUE TO THE BOUNDARY LAYER OF WATER WHICH IS DRAGGED ALONG WITH THE SHIP WHEN THE SHIP MOVES THROUGH THE WATER BY REASON OF THE FRICTION AGAINST THE SHIP''S HULL, COMPRISING A SMALL CHAMBER SECURED TO AND EXTENDING OUTSIDE THE ACTUAL SHIP''S HULL BELOW THE WATER LINE AND SITUATED AT THE FOREPART OF THE SHIP, SAID CHAMBER HAVING AN OPENING FOR LETTING IN SEA WATER TURNED MAINLY IN THE NORMAL DIRECTION OF MOVEMENT OF THE SHIP, SAID OPENING BEING SPACED FROM THE SHIP''S HULL A DISTANCE GREATER THAN THE THICKNESS OF THE BOUNDARY LAYER AT THAT LOCATION ON THE SHIP''S HULL SO AS TO BE SUBJECT TO THE TRUE VALUE OF THE DYNAMIC PRESSURE, SAID CHAMBER HAVING ANOTHER OPENING EXTENDING THROUGH THE SHIP''S HULL FOR CONNECTION OF A PIPING FOR TRANSMITTING THE DYNAMIC PRESSURE, AND SAID CHAMBER HAVING AT ITS FORWARD END TWO FLAT WALLS, WHICH FORM AN ANGLE IN THE ORDER OF 90*, THE BISECTIONAL PLANE OF WHICH COINCIDES WITH THE CENTER LONGITUDINAL BULKHEAD OF THE SHIP OR WITH A PLANE, WHICH IS PARALLEL TO THIS BULKHEAD, OR INTERSECTS THE SAME OR ITS EXTENSION ALONG A HORIZONTAL LINE, THE CENTER OF SAID OPENING FOR LETTING IN SEA WATER BEING IN SAID BISECTIONAL PLANE.