This paper presents results of turbulent features in combined wave-current flows, and is of vital significance to coastal scientists and engineers. The manuscript is well-written, and the conclusions are well supported by the evidence as described in experimental results. Therefore, I would suggest this to be published. The conclusions can be modified by listing the number.

Dear Authors,

From my viewpoint the work is really nice and it add value to the actual comprehension when considering waves and current interactions.  But the final presentation of the work done could be improved, there are some typos and I've had to read some parts of the document several times (maybe it's my English, but an English reviewer could improve the readability of the document).

Typos on 

ln 38 (Experiments in a XXXXXX were carried out)       ¿  shallow water basin ?

ln 58 (The bottom of the XXXXXX   is horizontal and made of soft concrete)    

ln 107 (respectively in the x, y and v' directions)      v' should be z

ln 111 (to account the incidence)     a for is missing

ln 123-125 really difficult to understand,    redo please

Other minor issues:

I understand that experimental numbers of table 1, have been done when considering timely order, but it makes more difficult to compare similar cases (1 vs 28). Next time re-order the lab experiments to fit within the logical comparison of the reader.

ks equivalent roughness in ln 161 is obtained from best fitting, but in line 172 is obtained through its intercept. Please clarify the discrepancy and unify the document text

Why figure 2 is presented in vertical configuration of z/h it just make it more difficult to understand the z distance of each measurement to the floor. If it has been made to unify the figures with Figure 3, the distance to the bottom (z) could be included in the right axis of figure 2.

ln 200 I did not understand at the beginning the reasoning for a weaker current, include some reference to the fact that this cases are run with a larger water level.

The only real comment refers to the data presented. The paper focus on the effect over turbulence of adding wave to the existing current and the reduction of turbulence bursts and increase of its intensities. It would be relevant to quantify this changes when considering the wave+current. The presented data (Figure 6) is accompanied by one number and the sentence (This occurrence was observed for all the runs with larger wave height cases, but not easily recognizable for the cases with lower H, ln 274). From my viewpoint that effect should be quantified, so that later on researchers can compare their results and add on their values to study trends under similar/different conditions.