Hose Jubilee clips Grade of SS

[KenMcCulloch]

Cosequences come into play. Car hose fails, you stop, boat hose fails you die?

Well not really. Hose attached to seacock fails, close seacock. Yes, I appreciate that could involve a certain amount of rather anxious searching to find which hose has failed but isn't that the point of having a valve to close every opening below the waterline? I'm with Vyv on this, many of the hosetail fittings on our boat predate the double-clipping era and are not long enough for two clips.

 

[Cardo]

Well not really. Hose attached to seacock fails, close seacock. Yes, I appreciate that could involve a certain amount of rather anxious searching to find which hose has failed but isn't that the point of having a valve to close every opening below the waterline? I'm with Vyv on this, many of the hosetail fittings on our boat predate the double-clipping era and are not long enough for two clips.

Pretty much the same in our case. Surveyor didn't seem bothered that most seacocks only had a single jubilee clip, and therefore neither was the insurance company.

As mentioned previously, the insurance company were only interested in the recommendations made by the surveyor, no matter how minor and unessential they were.

 

[MikeBz]

As mentioned previously, the insurance company were only interested in the recommendations made by the surveyor, no matter how minor and unessential they were.

Snap. In our case the surveyor listed various things which should be done at the end of season haul-out refit, like 'service and inspect seacocks & skin fittings' and other entirely normal annual maintenance activities. The insurer then made it a condition of insurance that this was done pronto which put the wind up the buyer (not terminally, but you can't blame him from being concerned as he was buying his first boat).

 

[cliff]

I was tempted to launch into one of my pet hates, which is this insistence on double clipping. Why? There are billions of hoses throughout the world containing pressures of up to 8 bar and probably loads more, yet they are only single clipped. Automotive heating systems at 12 psi or so are universally single clipped. And yet on a boat, with an internal pressure of a few inches of water, the 'experts' say they have to be double clipped. However, I won't start on it.

Vyv, Simple - the examples you quote are running at steady comparatively low pressure however in the boaty world one has to allow for hydraulic hammering due to the hull slapping down on occasions - more prone in Mobos - demonstration, next time you are in the bath slowly lower your outstretched hand into the water with your palm open and facing down - no pain or discomfort at all. Now slap your hand down as hard and fast as you can and feel the pain and discomfort (not to mention SHMO's wrath if you soak the floor) - at low speed there is no noticable pressure surge or pressure wave however at high speeds there is a marked increase in pressure. Likewise a small boat slapping / slamming down will experience a hydrodynamic pressure wave much higher than when sailing along "normally" though I do agree double clipping is maybe a little OTT - a good quality clip properly fitted and inspected regularly (changed when needed) should suffice.