Skip to content

Boat Collar Fittings

WHO FITS IT?

YOU FIT IT

Bit of a handy-man? That's all you need to join the 70% of self-fitters. We're available 7 days a week if you feel unsure at any stage during fitting.

A THIRD PARTY FITS IT

Independent fitters and marine dealers who fit Collars are all around Australia. Tell us where you are, and we'll put you in touch. This page is for them, too.

THE KAPTEN FITS IT

If you're near the Sunshine Coast, Queensland, see the Kapten in Nambour.

WHICH FITTING METHOD?

1. CHEMI-WELD METHOD
GLUED/WELDED ONTO YOUR HULL
NO INTERNAL SCREWS/FIXINGS

Suitable for:

  • Fibreglass & timber boats under 4m, with less than 15hp (simply glued on with no external fixings).
  • Big aluminium boats that can handle the extra weight of large metal fixings.
  • Large plate & fibreglass boats with limited internal access (high floors, double skinned etc). Adhered to the hull with box-sections (glued or welded to hull) and large flat bar with external fixings.

Large boats: Max size Collars only.

2. MECHANICAL/COMMON METHOD
SCREWS DRILLED THROUGH HULL & SEALED
SUITS MOST BOATS. EASIEST FITTING

Suitable for:

  • All vessels with good internal access & single skin hulls: plastic, fibreglass, aluminium boats.
%
fit their own Boat Collars
Squirting glue behind plates.
Squirting glue behind plates.

FREQUENTLY ASKED QUESTIONS

Can I use Sikaflex instead of Liquid Nails?

Liquid Nails is the only one we recommend or cover with warranty as it chemically bonds to the foam - (think melting together with the foam) - so the foam actually tears before the glue will ever let go - and it takes a LOT for the foam to tear.

Sikaflex on the other hand will stick to the Collar, but under pressure it will peel off the Collar, leaving an almost perfect impression of the foam on its surface.

Therefore, only Liquid Nails Original (or its brother, Parfix), should be used to glue in the internal plates.

Does it have to go all the way to the bow?

The full-length is a major feature that makes KBCs work as well as they do. #1. It turns down the spray, for dry rides. #.2 It produces bow lift, to protect against nose-diving. #3. It provides maximum overall buoyancy.#4. IMPORTANT: if a Collar stops short (is not full length) on a chine fitting, 'green' water can get on top of it during a turn, which has the potential to make it dig in and flip the boat. A proper-length Collar does the opposite, allowing the tightest, most level turns possible.

Will a Collar cause corrosion?

No, because all screws are coated with Tef-gel, an amazing creamy substance that remains tacky for years, to keep a protective barrier between the stainless steel screws & your aluminium hull.

The Collar itself is fitted tight against your hull and is non-corrosive, being foam. If you use your boat up very dirty creeks or flood waters, and are concerned about debris wedging against your hull, you can run a strip/bead of Sikaflex or silicon around the Collar to seal it, if you want.

Regarding painted boats; factory painted or boats that have been prepped and painted with quality marine paint, won't have a problem with a Boat Collar being fitted. BUT, if you have a hull that's painted cheaply, like with house paint, that was also poorly prepared, it's almost guaranteed the paint will deteriorate and allow water to sit behind the paint and cause corrosion.

My boat has side pockets - can I still fit a Collar?

Yes, absolutely. Most Collars will fit underneath side pockets, but if the side pocket covers the fixing area, a small pilot hole is required to be drilled through the side pocket (about 12mm diameter). This allows for the long drill bits to pass through, allowing you the right angle etc on the screw heads.

Do I have to lift my floor to fit a Collar?

You'll only have to lift your main floor if the floor is 40mm or more above the chine line (side plate meets bottom plate). Most tinnies have the floor sitting just above the chine bar, so doesn't need removing.

If your floor is sealed and/or can't be removed, and is higher than 40mm - you can either;

  1. Raise the Collar so the bottom fixing sits just above your floor.
  2. Use external fixings to anchor the Collar below your floor.
  3. Or, you may be eligible for the new Chemi-Weld fitting method (only suitable for large boats) that requires no internal fixings. Ask us for more info. 
Can I glue it on instead of screws?

If your boat is over 4.5m long and have either pressed or flat sides, and is either fibreglass or aluminium - yes, you may be able to glue it or weld it onto the sides of your boat, using our new Chemi-Weld fitting method. Ask us for more info. 

Below: click to see your style of boat with a KBC.

WHAT WOULD YOU LIKE TO SEE NEXT?

CONTACT/VISIT

Office: (07) 5441 3636
Mobile: 0423 499 047
58 Arundell Ave Nambour, QLD, Australia 4560.
info@boatcollar.com.au

BUSINESS DETAILS

Australian Patent # 2010201449. American Patent Application # 13/083,588 - Watercraft Accessory.
Marine Safety Innovations Pty Ltd.
ABN # 53 141 908 385
Australian owned & operated since 2010

SEE THE EVOLUTION OF THE BOAT COLLAR:
0