Opium · Surfski
Opium SIOU
5.25m x 53cm beginner ski and the newest boat in the range, launched with a published 13kg weight and a stated 60-110kg paddler capacity. Shortest surfski Opium builds, and the only one in the range with a published weight.
- Length
- 5.25 m
- Beam
- 53 cm
- Deck
- 33.5 cm
- Lightest
- 13 kg
Specifications
- Length
- 5.25 m
- Beam
- 53 cm
- Deck height
- 33.5 cm (est.)
- Category
- Surfski
- Skill level
- beginner
- New price
- Not listed new
Layup weights
On-water profile
Both scores are rated at the hull's own design weight. How these are derived.
Suits: First sessions, flat water and sheltered coast.
Paddler weight
This hull is built around a paddler of about 87 kg. It stays workable from 76 kg to 92 kg, and sits at its best between 81 kg and 88 kg.
Derived from published hull dimensions and calibrated against manufacturer paddler limits, not taken from a marketing range. The method, in full.
Generations
Opium Caiaques is a Brazilian builder with the widest ski range in South America — seven surfskis from an elite 6.45m racer down to a 5.25m beginner hull, alongside OC1, OC2 and OC6 outriggers. Opium publishes an overall hull height for each boat; that figure is not the deck height this index uses for weight bands, so it is not carried across.
What works, and what it costs you
What works
- Published 13kg weight, light for a beginner ski
- Stated paddler capacity range
- Newest hull in the range
Trade-offs
- Short waterline caps the speed
- No price published anywhere
- Effectively unavailable outside South America
What paddlers say
No independent owner review located as of August 2026.Reported experience
Where to buy
No mapped dealer for Opium yet. Every maker and market we cover.
Opium sells in Brazil in reais and publishes no list price. Specs here come from the maker's catalogue and Brazilian dealer listings.
Similar craft
Closest in stability, speed and paddler weight across the whole index.
Sipre
Ackua 515
ChalupSki
Waikiki
Think