Double-bottomed ship
                                Date
                            
                            
                                28 January 1663
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p134
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 259mm
width (page): 440mm
                            
                        
                            
                            
                            width (page): 440mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Large drawing of the structure of a double-bottomed ship designed by William Petty.
                            
                            
                        
                            
                            
                            
                                Object history
                            
                            
                                At the meeting of the Royal Society on 28 January 1663, ‘The report of the committee [of the Dublin Philosophical Society] appointed November 26, 1662, to examine and give in an account of the matter of fact concerning the structure and sailing of Sir William Petty’s new ship was read, and registered’ (Birch 1:183). The report is printed in Birch 1:183-192. 
The committee assessed 'draughts' and an 'exact' model of the ship 2 1/2 foot long.
This is not a representation of the model that has survived in the Royal Society. At the meeting of the Royal Society on 29 July 1685, ‘A curious model of a double bottomed ship was presented by Mr. Houghton in the name of John Worlidge of Petersfield, which had been made some years before by his brother, Mr. Worlidge, a gold-smith at Portsmouth. A paper of the description and excellency of the vessel being read was sent with it to the repository, being first entered in the letter-book [not entered in LBO]’ (Birch 4:423-24). This is most likely the model currently in the Royal Society.
The Society appears to have had another model of the 'Experiment', whose representation by Henry Hunt is now among the Pepys papers. Petty explained to Robert Southwell that it was not a model of a 'real' ship, as it showed only one deck when the actual ship had two. Henry William Edmund Petty-FitzMaurice Lansdowne, The Double Bottom or Twin-Hulled Ship of Sir William Petty (Oxford: the Roxburghe Club, 1931), p. xvii.
A copy of this drawing was sent by Robert Moray to Christian Huygens in a letter dated 1 March 1663, printed in Christiaan Huygens, Œuvres Complètes (The Hague: M. Nijhoff, 1891), vol. 4, 318-21 (no. 1102).
                            
                        
                            
                            
                            The committee assessed 'draughts' and an 'exact' model of the ship 2 1/2 foot long.
This is not a representation of the model that has survived in the Royal Society. At the meeting of the Royal Society on 29 July 1685, ‘A curious model of a double bottomed ship was presented by Mr. Houghton in the name of John Worlidge of Petersfield, which had been made some years before by his brother, Mr. Worlidge, a gold-smith at Portsmouth. A paper of the description and excellency of the vessel being read was sent with it to the repository, being first entered in the letter-book [not entered in LBO]’ (Birch 4:423-24). This is most likely the model currently in the Royal Society.
The Society appears to have had another model of the 'Experiment', whose representation by Henry Hunt is now among the Pepys papers. Petty explained to Robert Southwell that it was not a model of a 'real' ship, as it showed only one deck when the actual ship had two. Henry William Edmund Petty-FitzMaurice Lansdowne, The Double Bottom or Twin-Hulled Ship of Sir William Petty (Oxford: the Roxburghe Club, 1931), p. xvii.
A copy of this drawing was sent by Robert Moray to Christian Huygens in a letter dated 1 March 1663, printed in Christiaan Huygens, Œuvres Complètes (The Hague: M. Nijhoff, 1891), vol. 4, 318-21 (no. 1102).
                                Related fellows
                            
                            
                                William Petty (1623 - 1687, British) , Natural philosopher
Renatus Franciscus Slusius (1622 - 1685, Belgian) , Mathematician
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Christiaan Huygens (1629 - 2006, Dutch) , Natural philosopher
                            
                        
                            
                            
                            Renatus Franciscus Slusius (1622 - 1685, Belgian) , Mathematician
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Christiaan Huygens (1629 - 2006, Dutch) , Natural philosopher
                                Associated place