'Nduja di Spilinga
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Built structures · smoking-sheds
Manoka smoking house
Manoka's fish smoking takes place on pole racks inside airy houses; local partners later tested earth-brick and insulated metal prototypes to reduce wood use and processing time.
Pole racks in an airy island house
On Manoka Island, fish smoking takes place on pole-built racks inside houses that are generally open enough for air to pass through. The island lies in the Cameroon estuary and is part of Douala. Fishing is a major local livelihood, and women are the processors responsible for smoking. Fuel comes from the island's mangroves; palétuvier is identified as the most targeted wood. These details tie the smoking house to the island's fishing and woodfuel economy, but they do not establish one plan used by every household.
The documented descriptions give no dimensions, roof or wall materials, hearth geometry, foundation, or exact distance between fire and fish. This record captures the local structure and its redesign history rather than offering a construction drawing.
Local prototypes and what the trials show
Beginning in 2019, CIFOR and partners worked with the University of Douala and the Association des femmes fumeuses de Manoka (AFUMA) to develop improved smokers through participatory trials. The first prototype was made from earth bricks and placed with the association for testing. A later version used metal and glass wool. Both were local responses to the wood demand and space use of the traditional arrangement.
In a reported comparison involving 200 kilograms of fresh fish, the traditional smoker used 1.33 cubic metres of mangrove poles over three days. The earth-brick prototype used 0.88 cubic metres over two days, a 33 percent saving in the report. The later metal-and-glass-wool prototype used 0.16 cubic metres of wood over one day in the reported trial, presented as an 88 percent saving against the traditional arrangement. These figures describe those trials, not guaranteed rates for other fish, loads or installations.
The CIFOR woodfuel brief places the prototypes in a wider effort to reduce pressure on Wouri estuary mangroves. It describes fish smoking as an important economic activity on Manoka and records women's work across the processing chain. The structure is both a processing place and part of a locally managed livelihood and fuelwood system.
Documented limits
The available sources do not publish an engineering plan, foundation detail, fire-clearance dimensions, material grades, airflow specification, loading schedule or fish-safety endpoint. They also do not establish that one prototype replaced every traditional house. The trial results should not be treated as build specifications or generalized beyond the reported comparison.
History
The 2021 project account describes fish smoking on pole racks inside airy houses and reports participatory development of earth-brick and insulated-metal prototypes with Manoka processors.
Site
SettingFish-processing houses on Manoka Island in the Cameroon estuary; the traditional form is an airy house containing pole racks.
GroundThe sources do not describe the houses' foundations, soil or drainage.
ClimateThe sources locate the work in the Cameroon estuary but supply no site-specific climate measurements.
NotesThe traditional pole-rack house and later prototype smokers are documented as local variants; no universal layout or dimensions are given.
A build is made where it stands: moving it means building it again.
How it is built
Materials
- Poles for smoking racks — Traditional racks are made from poles inside airy houses; species and dimensions are not specified.
- Mangrove poles as fuel — Fuel used in local fish smoking; the report identifies palétuvier as the most targeted wood. This is an operating fuel, not a required building material.
- Earth bricks — Used in the improved prototype made available to AFUMA for experimental use.
- Metal and glass wool — Materials named for the second improved prototype.
- Traditional Manoka smoking houses hold pole-built racks in airy, generally ventilated buildings; the source does not provide a measured plan or exact rack-to-fire geometry.
- From 2019, CIFOR and partners worked with AFUMA and the University of Douala on locally made, wood-saving prototypes. The first described prototype used earth bricks.
- A later prototype used metal and glass wool. The project comparison does not give a reproducible assembly sequence; these notes describe reported variants, not building instructions.
Places
Manoka Island
Documented use · Locality evidenceThe source places Manoka in Douala, within the Cameroon estuary; it does not identify a precise house address.
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Sources
Forests News / CIFOR-ICRAFHistory · Geography · Materials · Use · Comparison
Cameroun : Deux nouveaux prototypes de fumoirs à poisson permettent de faire des économies sur le bois énergieManoka is located in Douala within the Cameroon estuary; traditional pole-rack smokers stand inside airy houses.
Women processors undertake fish smoking; mangrove wood is used as fuel and palétuvier is identified as the most targeted species.
CIFOR and partners began participatory prototype work in 2019 with AFUMA and the University of Douala.
For a reported 200 kg fresh-fish comparison, the traditional arrangement used 1.33 m³ of mangrove poles over three days; an earth-brick prototype used 0.88 m³ over two days, reported as a 33% saving.
A later metal and glass-wool prototype used 0.16 m³ of wood for 200 kg of fresh fish over one day in the reported trial, described as an 88% saving against the traditional arrangement.
The account does not provide a dimensioned construction plan or universal performance guarantee.
Cited in: Pole racks in an airy island house; Local prototypes and what the trials show; Documented limits
CIFOR-ICRAFContext · Use
Sustainable Woodfuel Brief #9: Woodfuel consumption rate and relieving pressure on mangroves from fish smoking and lack of managementThe brief describes fish smoking as a primary economic activity on Manoka and notes the role of women processors.
It records traditional smoking's high fuelwood demand and places improved smokers within broader sustainable woodfuel work.
Reported processing periods and wood demands describe local practice, not universal operating specifications.
Cited in: Local prototypes and what the trials show; Documented limits