To view a 1910 Marconi Receiving and Instruments catalogue, select this link.
It is not known if the devices shown inn the catalogue saw marine service, however it is featured here because its available on the web. Page 31 of the catalog could not be scanned due to its deteriorated state.
Contributors and Credits:
1) Catalog posted on the Tube Collectors web page http://www.tubecollectors.org/archives/1910%20Marconi%20Catalog.pdf