Dreyer Table Mark I*
The Mark I* Dreyer Table was a moderately improved version of the Mark I table. It added a helm-free capability and a more comprehensive means of outputting gun range. The few ships to receive it were completed too late to see wartime service.
Particulars
The Mark I* was very nearly identical to the Mark I table, with 2 exceptions:
- The Mark I* added a gyro-compass input to keep own heading updated on the dumaresq as was done first on the Mark III table.
- The Mark I*'s gun range was conveyed to a Range Master Transmitter on the T.S. bulkhead.
Its dimensions were almost the same as those of the Mark I table, except the worm shaft bringing in gyro-compass data to the dumaresq added almost 2 feet to the height:
| Overall Dimensions | |
| Width | 5 feet, 8 inches |
| Depth | 5 feet, 1.5 inches |
| Height of Range Rate Grid | 3 feet, 4 inches |
| Height of top of dumaresq | 5 feet, 9 inches |
Deployment
Aside from 2 deployed in monitors, the Mark I* tables were primarily deployed to Hawkins class cruisers completed after the war.[1] As the cruisers were all completed postwar and the monitors completed in the last weeks of the war, the Mark I* table is a historical footnote in World War I naval history.
As the ships using the Mark I* were completed so late, it is likely that they boasted the latest refinements from first installation, such as a Standard Bearing Plot or G.D.T. for their bearing side, and a range typewriter for plotting ranges[Inference].
| Ship using Mark I* table | Date equipped |
| Glatton | ??? |
| Gorgon | ??? |
| Cavendish | on completion[Inference] |
| Effingham | on completion[Inference] |
| Frobisher | on completion[Inference] |
| Hawkins | on completion[Inference] |
| Raleigh | on completion[Inference] |
See Also
Footnotes
- ↑ Handbook of Captain F.C. Dreyer's Fire Control Tables, 1918. p. 3.
Bibliography
