The bow pome is not just an accessory, but a critical element of the safety and functionality of an aluminum boat, without which it is impossible to securely secure a vessel when towed, moored or transported on a trailer. However, many owners of PVC boats and aluminum models still underestimate the importance of choosing and installing this seemingly simple device correctly.

In this article, we will discuss all the nuances: nose-crush (Stop, and then, and then, and then, and then, and then, and then, and then, and then, and then, and then, and again, and again.) step-by-step installation instructions And you'll know, given the thickness of the aluminum and the loads. materials categorically can not be used to fasten the diamond to the aluminum bodyHow to avoid corrosion in the joints and why standard screws from the kit often cause breakdowns, and at the end - answers to the most common questions and TOP 5 mistakes that even experienced boaters make.

Why do you need a bow pond on an aluminum boat?

The main function of the nose is to provide safe-tow and mooring Without it, you're at risk.

  • 🔹 Damage the hull during transportation (especially important for boats with thin aluminum up to 1.5 mm).
  • 🔹 Lose a boat on the water because of a slipped rope or cable.
  • 🔹 To receive a fine from the SIMS for non-compliance with the rules of equipment of small vessels (paragraph 3.2.5 of the Rules of navigation).
  • 🔹 Destroy the paint coating when attaching the cable directly to the board.

Besides, it serves as a rhyme. anchorage point for:

  • 🎣 Anchor tile (especially important for fishermen on the course).
  • 🚗 Transportation slings when loading / unloading the boat from the trailer.
  • 🔧 Winches or thaws when the vessel is independently launched into the water.

Interesting fact: in competitions in boat sports (for example, drag boat racing) the nasal pouch shall withstand the load in 5-7 times the weight of the boatFor ordinary aluminum boats with a length of 3-4 meters, the minimum strength of the diamond is 500 kg.

📊 What type of squirrel is installed on your boat?
Injunction (in case)
Consignment note (on board)
Turning (with carbine)
No roma
I know.

Types of bow rims for aluminum boats: which one to choose?

All the diamonds are divided into three main categories according to the way they are attached. Each option has its pros and cons, which depend on the size of the car. aluminum-thickness, loading and frequency.

Type of ribe Advantages Deficiencies Recommendations for application
Injurious.
(received in the shell)
  • Maximum strength
  • Does not interfere with transportation
  • Minimum risk of hooks
  • Complicated installation (requires drilling)
  • Risk of corrosion in the insertion sites
  • Not suitable for thin aluminum (<1.5 mm)
 Boats with a length of 3.5 m, aluminum thickness from 2 mm, intensive operation
Invoice
(attached on board)
  • Simple editing.
  • Suitable for thin aluminum
  • You can install it yourself.
  • Less strength
  • Could be intrusive when towing.
  • Risk of separation under heavy loads
 Boats up to 3.2 m, aluminum thickness 1-1.5 mm, rare towage
Turning.
(carbine or ring)
  • Mooring convenience
  • Less wear on the rope
  • Suitable for frequent maneuvers
  • Complex construction (more break points)
  • More expensive than analogues
  • Requires regular lubrication
 Fishing boats, yachts, boats with frequent moorings

Expert advice: for aluminum boats stamps "Kazanka", "Ob", "Crimea" The best choice will be a smack of brands Attwood, Sea-Dog or domestic "Vodnik"These models have coatingThis prevents galvanic corrosion when in contact with aluminum.

💡

Before buying a diamond, check its certificate - quality models must meet the standard. ISO 15085 (for boat accessories).

Installation materials and tools

To install the nose, you will need:

  • 🔧 drill with metal drills (diameter under the bolts of the Roman).
  • 🔨 zenker (to remove the chamfer on the holes).
  • 🔩 Set stainless bolts M8-M10 (Not less than 8.8 grade of strength).
  • 🧴 Seat sealer for boats (for example, Sikaflex 291 or 3M 5200).
  • 🧲 Larger diameter washers (for load distribution).
  • 🔧 Dynamometer key (to control the timing of the puff).
  • 🧼 Degreaser (acetone or alcohol)
⚠️ Attention: Never use it. metal-handler They can not withstand dynamic loads and can escape when towed, the minimum diameter of the bolts is 8 mm, length is not less than 20 mm (for aluminum 1.5-2 mm).

For the cut-outs, additionally:

  • 📏 Markup pattern (usually comes with a smack of smack).
  • 🔪 Kerner (for accurate marking of holes).
  • 🧰 File (for the treatment of edges after drilling).

Important: If the aluminum is less than 1.5 mm thick, use it. reinforcer Stainless steel (thickness 2-3 mm) on the inside of the body, which will prevent the metal from deforming when the bolts are tightened.

Step-by-step instructions for installing a nose frock

The installation process depends on the type of rimmer, but the general sequence of actions is as follows:

☑️ Preparation for the installation of the diamond

Done: 0 / 4

Marking and preparation of openings

Use a template from the kit or measure the distance between the mounting holes of the frock.

  1. Put the contour of the rigger on the bow of the boat.
  2. Drill holes with a diameter of 0.5 mm less than the diameter of the bolts (for example, for the bolt M8 - a drill of 7.5 mm).
  3. Treat the edges with a zenker to remove burrs.

Sealing and installation

Put the sealant on. Sikaflex 291 To the back of the pond and the contour of the holes, insert the washer bolts and tighten them in the following order:

  1. Tighten the bolts manually to the point.
  2. Use the dynamometer key with the moment:
    • For aluminum 1.5 mm: 12-15 N·m
    • For aluminum 2 mm: 18-22 N·m
  • Remove excess sealant immediately after installation.

    • Verification and testing

    After editing:

    • Check the slug for backlash (admissible gap - no more than 0.5 mm).
    • Apply a static load of 200-300 kg for 5 minutes (sandbags can be used).
    • Check the mounting sites for cracks or deformities.
    ⚠️ Attention: If the sealant is squeezed out of the smoke after the test load, then the timing of tightening of the bolts is not enough. Repeat the procedure with an increase in force by 10-15%.
    What to do if the squirrels stagger after installation?

    If the fry is wobbling, it's a sign of insufficient tightening or deformation of the aluminum.

    1. Remove the crumbs and inspect the holes - if they are deformed, drill under the bolt to a larger size (for example, from M8 to M10).

    2. Use washers of larger diameter (for example, 25 mm instead of the standard 16 mm).

    3. Add a 2 mm thick stainless steel reinforcement lining on the inside of the body.

    4 Re-apply the sealant and tighten the bolts with a moment 20% more than recommended.

    TOP 5 errors when installing a nose frock

    Even experienced boaters make critical mistakes that lead to breakdowns.

    1. Use of inappropriate bolts

      Ordinary black bolts or screws rust and break when loaded. stainless steel A2 or A4 (marking on the bolt head).

    2. Inadequate sealing

      Without a sealant, water penetrates the rump, causing aluminum to corrosion, especially dangerous for cut-in models.

    3. Bolt-tightening

      Excessive puffing moment deforms aluminum, weakening the mount. Always use a dynamometer key!

    4. Failure to take account of load direction

      The rims have a "working" direction (usually indicated in the instructions) if installed incorrectly, it can break when towed.

    5. Ignoring the thickness of aluminum

      For thin metal (<1.5 mm), be sure to use reinforcing linings, otherwise the bolts will simply tear the body out.

    Advice from the masters: after installing the rim, apply it to the bolts thread-plate (for example, Loctite 243This will prevent self-unwinding in vibrations and protect against corrosion.

    Care and maintenance

    The bow pome requires regular inspection and maintenance, especially if the boat is operated in salt water.

    • 🧹 After each launching:
      • Wash with fresh water (especially important for marine operations).
      • Check the tightening of the bolts (once a month with heavy use).
    • 🛠 Once a season:
      • Remove the fracking, clean the bolt thread and apply a new lubricant.
      • Check the condition of the sealant - if cracks remove the old and apply a new one.
      • Examine the body for microcracks around the mounts.
    • ❄️ Before winter storage:
      • Handle it with rump. preservative (for example, WD-40 Specialist).
      • If the boat is kept outside, cover it with a bare case or film.

    For rotary frames additionally:

    • Once every 3 months lubricate the hinge joint lithium-lubricant.
    • Check the backlash of the carbine - if it exceeds 1 mm, replace the rum.
    ⚠️ Attention: If the rum has been subjected to extreme loads (for example, during emergency towing), be sure to check it on the cleft assisted dyes Or an ultrasound tester, and a damaged poop can break at the wrong time.
    💡

    Regular maintenance of the river increases its service life by 2-3 times. Pay special attention to threaded connections - 70% of breakdowns occur due to corrosion of bolts.

    How to choose a cable for a nasal squirrel?

    Equally important is the right choice of cable to be attached to the river, which must meet several criteria:

    Parameter Recommendations Examples
    Materials Synthetics (polyester, nylon) or stainless steel Amsteel Blue, Dyneema, A4 stainless steel cable
    Diameter. At least 8 mm for boats up to 3.5 m, 10-12 mm for boats 4 m or more 8 mm - for Kazanka 320, 10 mm - for Ob 420
    Threatness At least 1000 kg (for towing) or 1500 kg (for mooring on the current) Sampson 3/8" (breaking load 1700 kg)
    Type of weaving Towing -- double-weaveFor mooring, twisted New England Ropes Sta-Set X (for towing)

    Important: Never use it. braided-line They damage the hands and hull of the boat. nylon-plated cable and a core from Dyneema.

    Use the following to attach the rope to the squirrel:

    • 🔗 Stainless steel carbine (for quick detachment).
    • 🧶 Node eight. or "conversational" (if the cable is without a carbine).
    • 🔧 Cable clip. (for example, Nicropress).

    Remember, the knot reduces the strength of the cable by 30-50%. If you want maximum reliability, use it. splicing (no-no-no-no-nose looping)

    FAQ: Frequent questions about nasal fries

    Can I put a nasal pome on a PVC boat?

    No, special PVC boats are used glue-ribs or broad-basedAttempt to install a metal nose eye on a PVC boat will damage the fabric. Frigate.) only rubber-stamped overhead models are suitable.

    Which is better, galvanized or stainless steel?

    For aluminum boats definitely stainless steel Galvanized diamonds corrode over time, especially in the areas of contact with aluminum (due to galvanic pair). Stainless steel lasts 3-5 times longer and does not require frequent maintenance.

    How many romas do you need for a boat?

    At least. nose-on (required by GIMS rules) Optimally:

    • Boats up to 3 m - 1 nasal pome.
    • Boats 3-4 m - 1 bow + 1 aft.
    • Boats from 4 m - 2 bow (left and right) + 1 aft.

    Additional dice simplify mooring and increase safety when towing.

    Can you tow a boat behind a bow poop at high speed?

    No, maximum towing speed behind the bow poop. 10-15 km/hAt higher speeds:

    • The load on the fastening (the risk of bolts pulling out) increases.
    • The boat may lose stability and capsize.
    • The wear of the rope and the roe is increasing.

    Use for high-speed towing special-slingThey are attached to the transom-ribs.

    How do you remove rust from the roach?

    To clean stainless mucus:

    1. Use it. cleaner (for example, Star brite Rust Stain Remover).
    2. For mechanical cleaning, brass-brush (not steely)
    3. After cleaning, apply passivator (for example, Boeshield T-9).

    If the rum has already been strongly corroded, it is better to replace it - the rust weakens the metal.