Through my daily journey along Liverpool's Dock Road, I have become the maritime equivalent of a train-spotter. I can recognize familiar ships and I know roughly how often they are in port. There have been some mornings when hitching a ride on one has seemed infinitely preferable to arriving at work. Yet I have realized, through reading Robin Haines's excellent study of oceanic voyages, how little I actually know about what happens in that long interval between ports. This latest book by Haines continues a series of publications on nineteenth-century emigration to Australia. Whereas the focus has previously been on the experiences of the emigrants, especially their morbidity and mortality, this aims at understanding the role and contribution of the doctors, who accompanied every oceanic voyage after 1849. Haines uses a selection of case studies from the 323 emigration voyages made between 1848 and 1885 from Britain to Australia. Most of these were unremarkable, resulting in a mortality of less than 2 per cent. Yet there were several notorious voyages, especially in the 1850s when outbreaks of infectious diseases killed large numbers of passengers, often children. Surgeon superintendents were hired to ensure the implementation of sanitary regimes and to provide medical care during the average 100-day voyages. They appear to have been remarkably successful, particularly given the fact that most voyages started out with a number of emigrants already harbouring infectious diseases such as typhus, whooping-cough and measles. The surgeon superintendents, Haines suggests, need to be seen as early pioneers in preventive medicine. At a time when British sanitary reformers were struggling to impose similar regimes, the complete authority given to these medical men on ships could have served as a useful pilot study. Haines does not seek to examine why the British authorities failed to capitalize on this. The partial nature of archive sources has determined the selection of case studies. Whilst the mortality data can be pieced together from materials in Australia and London, very few of the mandatory surgeons’ journals for each voyage have survived. Haines is well aware of the potential pitfalls, and is confident that the sources used are representative. There is a good balance between describing the normal routines on board ships, and discussing how exceptional circumstances were handled. The inclusion of diary-style case studies, using anecdotes from the handful of surgeons who also left personal journals, makes for gripping reading. Through these personal accounts we learn how surgeon superintendents worked to maintain not only sanitary order, but also the appropriate moral behaviour of the emigrants. Their success in both of these areas was required if Australia was to thrive as a colony, and they were conscious that their supervisory skills were in turn being monitored by the authorities. This book provides an insight into nineteenth-century society, exposing class and sectarian issues. At times the surgeons’ perspective is subsumed by accounts of how “barely civilized” emigrants from Ireland and the Highlands of Scotland struggled to cope with the protein-heavy diet and alien concepts of personal hygiene. Indeed, the emphasis on the experiences of the emigrants has squeezed the space devoted to the history of nautical medicine, apart from a brief acknowledgement of some “great men” such as James Lind, Gilbert Blane and Thomas Trotter. I had hoped to find more discussion of the backgrounds of surgeon superintendents, and some elaboration of Haines's views on ships as floating medical laboratories. This is a slim, beautifully-written volume. One hopes that there is yet more to be gained from such carefully detailed studies.