The Dinghy: Your Most Used and Most Abused Piece of Equipment

The dinghy is the most important boat you own. Not the mothership — the dinghy. When you're anchored out, the dinghy is your car, your truck, your grocery-getter, your dive platform, your fishing boat, your airport shuttle, and your escape pod. It makes 4-8 trips a day in the Caribbean. It gets dragged up beaches, loaded with jerrycans, bashed against docks, left in the sun, filled with rainwater, and occasionally stolen.

And yet most cruisers treat dinghy selection as an afterthought — whatever fits on the davits, whatever was cheap at the boat show. This is a mistake that compounds daily once you're living on the hook.

Choosing the Right Dinghy

RIB vs. soft-bottom inflatable. This is the fundamental decision. A rigid inflatable boat (RIB) with an aluminum or fiberglass floor planes easily, handles chop, and provides a stable platform for boarding and loading. A soft-bottom inflatable (roll-up) stows flat and takes up dramatically less space, but performs poorly in any kind of sea, won't plane with load, and provides a terrible ride in the trade wind chop that's a daily reality in most cruising grounds.

For full-time cruising, a RIB is the clear answer. The storage penalty is real — you'll need davits, a foredeck cradle, or tow it on passage — but the daily usability advantage is overwhelming. A 3.1-3.5 meter (10-11.5 foot) RIB is the sweet spot for a cruising couple: big enough to carry a week's provisions, a couple of dive tanks, or four people to a beach BBQ, and small enough to tow behind the mothership or hoist on davits without heroic effort.

Hypalon vs. PVC. Tube material matters. Hypalon (CSM) is the premium choice: superior UV resistance, longer lifespan in the tropics (8-12 years with care versus 3-5 for PVC), better glue adhesion, and easier to repair. PVC is cheaper and lighter, but degrades faster in tropical sun and is more difficult to patch reliably. For a boat heading to the tropics for extended cruising, the Hypalon premium pays for itself in longevity.

Hull material. Aluminum floors are lighter and more durable than fiberglass for a cruising dinghy. They won't crack if you beach hard on rock, and dents are cosmetic rather than structural. Fiberglass provides a smoother ride and is easier to fair and paint, but is heavier and more vulnerable to impact damage.

The Outboard

The outboard motor on your dinghy will see more running hours per year than the diesel on your mothership. Choose accordingly.

Size. For a 10-11 foot RIB, 9.9-15 HP is the working range. A 9.9 HP planes a lightly loaded dinghy and sips fuel. A 15 HP handles a full load (two people plus provisions) on plane and provides the power margin for punching through harbor chop or a stiff headwind. Many cruisers start with 9.9 and wish they'd bought 15.

Two-stroke vs. four-stroke. The two-stroke vs. four-stroke debate is effectively over for most applications. Modern four-strokes are quieter, more fuel-efficient, more reliable, produce fewer emissions, and start more easily. The traditional two-stroke advantages — lighter weight and simpler mechanics — have been narrowed by modern four-stroke engineering. Yamaha, Honda, Tohatsu, and Mercury all make excellent four-stroke outboards in the 9.9-15 HP range.

Theft prevention. Outboard theft is the number-one property crime in Caribbean cruising. Use a cable lock through the mounting clamp at all times — not just at night or in sketchy anchorages. Insurance companies often require evidence of a locking device for theft claims. Some cruisers weld a chain link into the transom bracket or use purpose-built anti-theft brackets that require tools to remove. It's a small investment against a $3,000-5,000 replacement.

Davits, Hoisting, and Passage Stowage

How you carry the dinghy on passage is a significant design decision. Options include stern davits, foredeck stowage (deflated or RIB inverted), and towing.

Stern davits are the most popular choice for boats over 38 feet. They allow the dinghy to be hoisted clear of the water in seconds, kept ready for instant deployment, and secured for coastal passages without deflation. In open-ocean passages, the dinghy should be hoisted tight against the davits with multiple lashings — a swinging dinghy in heavy weather is a wrecking ball. The davits themselves must be through-bolted to structural members, not just glassed to the transom skin.

Foredeck stowage is more secure in heavy weather and reduces the windage and weight aft that davit-mounted dinghies create. The tradeoff is convenience — launching and recovering from the foredeck is a multi-step process involving the halyard or a dedicated crane.

Towing works for short coastal passages in benign conditions. For anything offshore, tow at your peril — dinghy painters chafe through, inflatables capsize and fill, and recovering a waterlogged dinghy in a seaway is a miserable exercise. On ocean passages, the dinghy comes aboard. Period.

Daily Care in the Tropics

The tropical sun destroys inflatables faster than anything else. UV degradation weakens the tube fabric, hardens the adhesive at seams, and bleaches the material to a crispy translucency that precedes failure.

Cover it. A fitted dinghy cover that shields the tubes from direct sun when hoisted on davits is the single most effective longevity measure. Grey or white fabric reflects heat better than dark colors. A purpose-built cover costs $200-400 and adds years to tube life.

Rinse it. Salt crystals left to bake in the sun act as a mild abrasive and accelerate UV damage. Rinse the tubes with fresh water regularly — weekly at minimum, daily if your water budget allows.

Inflate it properly. Tubes should be firm but not rock-hard. Overinflation in the morning means dangerous pressure buildup by afternoon in the tropical heat (air expands significantly between dawn and midday temperatures). Slightly underinflate in the morning; the sun will bring it to correct pressure by mid-morning. Check pressure with your hand — the tube should give slightly under firm thumb pressure.

Protect the floor. Sand and grit tracked into the dinghy acts as sandpaper on the floor material. Carry a small brush and sweep the floor after beach landings. A section of old carpet or rubber mat in the bottom protects the floor from scuba tanks, anchor chains, and jerrycans.

Repair

Inflatable repair is a core cruising skill. Carry a comprehensive repair kit: Hypalon or PVC patches (matching your tube material), two-part Hypalon adhesive (for Hypalon boats) or PVC glue, solvent for surface preparation, a roller for pressing patches, sandpaper, and a valve wrench with spare valve cores.

Small punctures are straightforward: clean the area with solvent, roughen both the tube and patch with sandpaper, apply adhesive to both surfaces, let it tack up, press together firmly, and let cure for 24 hours before inflation. Practice this repair on a scrap of material before you need to do it for real on the beach in Dominica.

Seam failures are more serious and increasingly common as the dinghy ages. Hot tropical temperatures soften adhesive, and seam creep — the slow peeling of glued joints — can progress from a weep to a blowout. Catch it early with regular seam inspection and re-glue at the first sign of separation.

The Painter and the Landing

A good dinghy painter (tow line) is 8-10mm braided nylon, at least 5 meters long, with a spliced eye at the dinghy end and a clip or carabiner for quick attachment to dock cleats and mothership stern fittings. Carry a second shorter painter for tying to beach anchors or palm trees.

Beach landing technique matters for the dinghy's longevity. Approach slowly, tilt the outboard up well before the prop touches bottom, coast in on momentum, and step out to guide the bow onto sand — not coral, not rock, not sharp shell. A coral head can puncture a tube in a single impact. In surge, anchor the dinghy bow-out in knee-deep water rather than dragging it up the beach where wave action grinds the hull on sand.

The dinghy is the workhorse of cruising life. Treat it like one — maintain it, protect it, and invest in the best you can afford. Every day at anchor, it's the boat that matters most.

References: Practical Sailor, Cruisers Forum, West Marine, Caribbean cruiser experience