The Shackle Revisited

mousing the shackle

During our yacht surveys we rarely see shackles that have been moused. We remark that regularly in our reports, but I am not sure whether our clients all appreciate the importance of this.

Mousing is a simple and good practice to secure the bolt of a shackle to prevent it from getting unscrewed unintentionally. I was reminded of this in a marina in Croatia where the pontoons had been shackled to the quay and all shackles had been moused.

Galvanized shackles tend to unscrew when they are under a pulsating load. Even if you tighten them carefully they eventually get unscrewed because the micro-stalactites of the zinc coating eventually get faired under the strain. Stainless steel shackles are also prone to unscrewing as the bolt’s thread usually is seated and rather slippery in comparison to galvanized hardware.

Using rope or galvanized wire is good for mousing, monel wire is even better, but even a cable tie will do as long as it is inspected regularly.

And by the way, the safe working load of shackles is determined by the diameter of the thread root, which is often smaller than the diameter of the shackle body.

Inspect your hardware, in particular the shackles, regularly. This way you can avoid losing your ground tackle. Losing ground tackle happens – usually at a time when it is least expected and most inconvenient, thus maximizing damages.


Shot Blasting

I dedicate this article to Erdem and Doğan…

For decades I have carried out shot blasting of many yachts with garnet, sand and other projectiles. In this article, I would like to summarize some of my experiences.

Sand blasting and shot blasting is the technique of cleaning and abrading surfaces of metals, glass and glasslike materials, wood and plastics. Compared to a grinding wheel, needle gun, power brush, solvent cleaning and other methods, it requires a complex organization, but it gives very successful results unreachable by any other method.

In particular when it comes to surface preparation of metals there is no other method that will come close to it.

Sadun Boro 1928 – 2015…


A sailing legend passes away at 87

Sadun Boro, the Turkish sailor, has passed away at the age of 87 while being treated for cancer in Marmaris.

Sadun and his wife Oda circumnavigated the globe in 1965-1968 in their 10.5m Atkin designed wooden double ender, the “Kısmet”. On board was also their cat “Miço”. At an age of no fax and internet they managed to send very frequent updates about their journey to Turkey, which were published weekly by the Turkish “Hürriyet” and were highly popular reading.

Glorious Osman Music Troop in Tokyo!


“In Memory of the Ottoman Frigate Ertugrul: Glorious Osman Music Troop in Tokyo”

Main street at Shibuya Tokyo, 6 June 2015 in commemoration of 125th Anniversary of Ertuğrul Fırkateyni sunken by a typhoon off Kushimoto, Wakayama.

With respect to Turkey, Tetsuro Inaji, M/Y Hydrangea